1 files changed, 1 insertions, 1 deletions
diff --git a/Source/CTest/cmParseBlanketJSCoverage.h b/Source/CTest/cmParseBlanketJSCoverage.h
index 4fc64e7..a4f6670 100644
--- a/Source/CTest/cmParseBlanketJSCoverage.h
+++ b/Source/CTest/cmParseBlanketJSCoverage.h
@@ -35,7 +35,7 @@ public:
                            cmCTest* ctest);
   bool LoadCoverageData(std::vector<std::string> files);
   //  Read the JSON output
-  bool ReadJSONFile(std::string file);
+  bool ReadJSONFile(std::string const& file);
 
 protected:
   class JSONParser;