diff --git a/src/tools/syncqt/main.cpp b/src/tools/syncqt/main.cpp
index c5ab8f6aa9..276d10ea92 100644
--- a/src/tools/syncqt/main.cpp
+++ b/src/tools/syncqt/main.cpp
@@ -379,7 +379,7 @@ private:
             return false;
         }
 
-        for (auto header : generatedHeaders) {
+        for (const auto &header : generatedHeaders) {
             if (header.size() == 0)
                 continue;
             if (header[0] == '@') {