diff --git a/src/lib/cwe-mapper.cc b/src/lib/cwe-mapper.cc
index 32e7d097..f80dff75 100644
--- a/src/lib/cwe-mapper.cc
+++ b/src/lib/cwe-mapper.cc
@@ -35,6 +35,7 @@ struct CweMap::Private {
     bool detectedByTool(Defect def, const char *tool) const;
 };
 
+// coverity[pass_by_value]
 bool CweMap::Private::detectedByTool(Defect def, const char *tool) const
 {
     // detect tool in case it is not explicitly specified