diff --git a/src/apps/debugger/files/FileManager.h b/src/apps/debugger/files/FileManager.h
index e008fa5b4b..7c47a98a4b 100644
--- a/src/apps/debugger/files/FileManager.h
+++ b/src/apps/debugger/files/FileManager.h
@@ -75,7 +75,7 @@ private:
 private:
 			SourceFileEntry*	_LookupSourceFile(const BString& path);
 			void				_SourceFileUnused(SourceFileEntry* entry);
-			void				_LocateFileIfMapped(const BString& sourcePath,
+			bool				_LocateFileIfMapped(const BString& sourcePath,
 									LocatableFile* file);
 
 private: