diff --git a/index.js b/index.js
index 3ebf3555..598838eb 100755
--- a/index.js
+++ b/index.js
@@ -450,7 +450,8 @@ class NYC {
     const context = libReport.createContext({
       dir: this.reportDirectory(),
       watermarks: this.config.watermarks,
-      coverageMap: await this.getCoverageMapFromAllCoverageFiles()
+      coverageMap: await this.getCoverageMapFromAllCoverageFiles(),
+      sourceFinder: this.sourceMaps.sourceFinder
     })
 
     this.reporter.forEach((_reporter) => {
diff --git a/lib/source-maps.js b/lib/source-maps.js
index 8a3914cd..b563bc3a 100644
--- a/lib/source-maps.js
+++ b/lib/source-maps.js
@@ -14,6 +14,7 @@ class SourceMaps {
     this.cacheDirectory = opts.cacheDirectory
     this.loadedMaps = {}
     this._sourceMapCache = libSourceMaps.createSourceMapStore()
+    this.sourceFinder = this._sourceMapCache.sourceFinder
   }
 
   cachedPath (source, hash) {