diff --git a/colcon_notification/desktop_notification/terminal_notifier.py b/colcon_notification/desktop_notification/terminal_notifier.py
index 513516d..fe0bf23 100644
--- a/colcon_notification/desktop_notification/terminal_notifier.py
+++ b/colcon_notification/desktop_notification/terminal_notifier.py
@@ -18,7 +18,7 @@
 
 
 class TerminalNotifierDesktopNotification(DesktopNotificationExtensionPoint):
-    """Use `colcon-terminal-notifier` to show notifications."""
+    """Use `colcon_terminal_notifier` to show notifications."""
 
     def __init__(self):  # noqa: D107
         super().__init__()
@@ -50,13 +50,13 @@ def notify(self, *, title, message, icon_path=None):  # noqa: D102
         if install_prefix is None:
             logger.error(
                 'Could not determine the install prefix of the '
-                'colcon-terminal-notifier.app')
+                'colcon_terminal_notifier.app')
             return
 
         app_path = _get_app_path(install_prefix)
         if app_path is None:
             logger.error(
-                'Could not find the colcon-terminal-notifier.app in the '
+                'Could not find the colcon_terminal_notifier.app in the '
                 "install prefix '{install_prefix}'".format_map(locals()))
             return
 
@@ -74,7 +74,7 @@ def notify(self, *, title, message, icon_path=None):  # noqa: D102
             subprocess.run(cmd, input=message.encode())
         except FileNotFoundError:
             logger.error(
-                "Failed to find 'colcon-terminal-notifier'")
+                "Failed to find 'colcon_terminal_notifier'")
         except subprocess.CalledProcessError:
             cmd_str = ' '.join(cmd)
             logger.error(
diff --git a/colcon-terminal-notifier.app/Contents/Info.plist b/colcon_terminal_notifier.app/Contents/Info.plist
similarity index 95%
rename from colcon-terminal-notifier.app/Contents/Info.plist
rename to colcon_terminal_notifier.app/Contents/Info.plist
index f7f9e6b..c2db921 100644
--- a/colcon-terminal-notifier.app/Contents/Info.plist
+++ b/colcon_terminal_notifier.app/Contents/Info.plist
@@ -7,7 +7,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleExecutable</key>
-	<string>colcon-terminal-notifier</string>
+	<string>colcon_terminal_notifier</string>
 	<key>CFBundleIconFile</key>
 	<string>colcon</string>
 	<key>CFBundleIdentifier</key>
@@ -15,7 +15,7 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>colcon-terminal-notifier</string>
+	<string>colcon_terminal_notifier</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
diff --git a/colcon-terminal-notifier.app/Contents/MacOS/colcon-terminal-notifier b/colcon_terminal_notifier.app/Contents/MacOS/colcon_terminal_notifier
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/MacOS/colcon-terminal-notifier
rename to colcon_terminal_notifier.app/Contents/MacOS/colcon_terminal_notifier
diff --git a/colcon-terminal-notifier.app/Contents/PkgInfo b/colcon_terminal_notifier.app/Contents/PkgInfo
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/PkgInfo
rename to colcon_terminal_notifier.app/Contents/PkgInfo
diff --git a/colcon-terminal-notifier.app/Contents/Resources/colcon.icns b/colcon_terminal_notifier.app/Contents/Resources/colcon.icns
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/Resources/colcon.icns
rename to colcon_terminal_notifier.app/Contents/Resources/colcon.icns
diff --git a/colcon-terminal-notifier.app/Contents/Resources/en.lproj/Credits.rtf b/colcon_terminal_notifier.app/Contents/Resources/en.lproj/Credits.rtf
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/Resources/en.lproj/Credits.rtf
rename to colcon_terminal_notifier.app/Contents/Resources/en.lproj/Credits.rtf
diff --git a/colcon-terminal-notifier.app/Contents/Resources/en.lproj/InfoPlist.strings b/colcon_terminal_notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
rename to colcon_terminal_notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
diff --git a/colcon-terminal-notifier.app/Contents/Resources/en.lproj/MainMenu.nib b/colcon_terminal_notifier.app/Contents/Resources/en.lproj/MainMenu.nib
similarity index 100%
rename from colcon-terminal-notifier.app/Contents/Resources/en.lproj/MainMenu.nib
rename to colcon_terminal_notifier.app/Contents/Resources/en.lproj/MainMenu.nib
diff --git a/debian/patches/setup.cfg.patch b/debian/patches/setup.cfg.patch
index 349b0c4..3d7f0be 100644
--- a/debian/patches/setup.cfg.patch
+++ b/debian/patches/setup.cfg.patch
@@ -1,5 +1,5 @@
 Description: Remove the data_files from the setup.cfg file since the
- Debian package doesn't need the colcon-terminal-notifier.app.
+ Debian package doesn't need the colcon_terminal_notifier.app.
 Author: Dirk Thomas <web@dirk-thomas.net>
 
 --- setup.cfg	2019-06-04 20:00:00.000000000 -0800
@@ -9,30 +9,30 @@ Author: Dirk Thomas <web@dirk-thomas.net>
  	scspell3k>=2.2
  
 -[options.data_files]
--share/colcon_notification/colcon-terminal-notifier.app/Contents = 
--	colcon-terminal-notifier.app/Contents/Info.plist
--	colcon-terminal-notifier.app/Contents/PkgInfo
--share/colcon_notification/colcon-terminal-notifier.app/Contents/MacOS = 
--	colcon-terminal-notifier.app/Contents/MacOS/colcon-terminal-notifier
--share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources = 
--	colcon-terminal-notifier.app/Contents/Resources/colcon.icns
--share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources/en.lproj = 
--	colcon-terminal-notifier.app/Contents/Resources/en.lproj/Credits.rtf
--	colcon-terminal-notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
--	colcon-terminal-notifier.app/Contents/Resources/en.lproj/MainMenu.nib
-+# the Debian package doesn't need the colcon-terminal-notifier.app
+-share/colcon_notification/colcon_terminal_notifier.app/Contents = 
+-	colcon_terminal_notifier.app/Contents/Info.plist
+-	colcon_terminal_notifier.app/Contents/PkgInfo
+-share/colcon_notification/colcon_terminal_notifier.app/Contents/MacOS = 
+-	colcon_terminal_notifier.app/Contents/MacOS/colcon_terminal_notifier
+-share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources = 
+-	colcon_terminal_notifier.app/Contents/Resources/colcon.icns
+-share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources/en.lproj = 
+-	colcon_terminal_notifier.app/Contents/Resources/en.lproj/Credits.rtf
+-	colcon_terminal_notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
+-	colcon_terminal_notifier.app/Contents/Resources/en.lproj/MainMenu.nib
++# the Debian package doesn't need the colcon_terminal_notifier.app
 +# [options.data_files]
-+# share/colcon_notification/colcon-terminal-notifier.app/Contents = 
-+# 	colcon-terminal-notifier.app/Contents/Info.plist
-+# 	colcon-terminal-notifier.app/Contents/PkgInfo
-+# share/colcon_notification/colcon-terminal-notifier.app/Contents/MacOS = 
-+# 	colcon-terminal-notifier.app/Contents/MacOS/colcon-terminal-notifier
-+# share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources = 
-+# 	colcon-terminal-notifier.app/Contents/Resources/colcon.icns
-+# share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources/en.lproj = 
-+# 	colcon-terminal-notifier.app/Contents/Resources/en.lproj/Credits.rtf
-+# 	colcon-terminal-notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
-+# 	colcon-terminal-notifier.app/Contents/Resources/en.lproj/MainMenu.nib
++# share/colcon_notification/colcon_terminal_notifier.app/Contents = 
++# 	colcon_terminal_notifier.app/Contents/Info.plist
++# 	colcon_terminal_notifier.app/Contents/PkgInfo
++# share/colcon_notification/colcon_terminal_notifier.app/Contents/MacOS = 
++# 	colcon_terminal_notifier.app/Contents/MacOS/colcon_terminal_notifier
++# share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources = 
++# 	colcon_terminal_notifier.app/Contents/Resources/colcon.icns
++# share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources/en.lproj = 
++# 	colcon_terminal_notifier.app/Contents/Resources/en.lproj/Credits.rtf
++# 	colcon_terminal_notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
++# 	colcon_terminal_notifier.app/Contents/Resources/en.lproj/MainMenu.nib
  
  [tool:pytest]
  filterwarnings = 
diff --git a/setup.cfg b/setup.cfg
index f281021..03c9138 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -52,17 +52,17 @@ test =
 
 [options.data_files]
 # distutils replaces dashes in keys with underscores
-share/colcon_notification/colcon-terminal-notifier.app/Contents =
-    colcon-terminal-notifier.app/Contents/Info.plist
-    colcon-terminal-notifier.app/Contents/PkgInfo
-share/colcon_notification/colcon-terminal-notifier.app/Contents/MacOS =
-    colcon-terminal-notifier.app/Contents/MacOS/colcon-terminal-notifier
-share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources =
-    colcon-terminal-notifier.app/Contents/Resources/colcon.icns
-share/colcon_notification/colcon-terminal-notifier.app/Contents/Resources/en.lproj =
-    colcon-terminal-notifier.app/Contents/Resources/en.lproj/Credits.rtf
-    colcon-terminal-notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
-    colcon-terminal-notifier.app/Contents/Resources/en.lproj/MainMenu.nib
+share/colcon_notification/colcon_terminal_notifier.app/Contents =
+    colcon_terminal_notifier.app/Contents/Info.plist
+    colcon_terminal_notifier.app/Contents/PkgInfo
+share/colcon_notification/colcon_terminal_notifier.app/Contents/MacOS =
+    colcon_terminal_notifier.app/Contents/MacOS/colcon_terminal_notifier
+share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources =
+    colcon_terminal_notifier.app/Contents/Resources/colcon.icns
+share/colcon_notification/colcon_terminal_notifier.app/Contents/Resources/en.lproj =
+    colcon_terminal_notifier.app/Contents/Resources/en.lproj/Credits.rtf
+    colcon_terminal_notifier.app/Contents/Resources/en.lproj/InfoPlist.strings
+    colcon_terminal_notifier.app/Contents/Resources/en.lproj/MainMenu.nib
 
 [tool:pytest]
 filterwarnings =