diff --git a/src/libs/qmljs/persistenttrie.h b/src/libs/qmljs/persistenttrie.h
index 59d376f6025..a8bc62144c1 100644
--- a/src/libs/qmljs/persistenttrie.h
+++ b/src/libs/qmljs/persistenttrie.h
@@ -88,7 +88,7 @@ template <typename T> void enumerateTrieNode(const TrieNode::Ptr &trie, T &t,
     if (trie.isNull())
         return;
     base.append(trie->prefix);
-    for (const TrieNode::Ptr subT : std::as_const(trie->postfixes)) {
+    for (const TrieNode::Ptr &subT : std::as_const(trie->postfixes)) {
         enumerateTrieNode(subT,t,base);
     }
     if (trie->postfixes.isEmpty())
diff --git a/src/libs/qmljs/qmljsimportdependencies.cpp b/src/libs/qmljs/qmljsimportdependencies.cpp
index 92cdb261391..39bee11a2a7 100644
--- a/src/libs/qmljs/qmljsimportdependencies.cpp
+++ b/src/libs/qmljs/qmljsimportdependencies.cpp
@@ -663,7 +663,7 @@ void ImportDependencies::iterateOnCandidateImports(
         for (const QString &cImportName : imp) {
             CoreImport cImport = coreImport(cImportName);
             if (languageIsCompatible(vContext.language, cImport.language)) {
-                for (const Export e : std::as_const(cImport.possibleExports)) {
+                for (const Export &e : std::as_const(cImport.possibleExports)) {
                     ++benchMark.nPossibleExports;
                     if (e.visibleInVContext(vContext)) {
                         ImportMatchStrength m = e.exportName.matchImport(key, vContext);
@@ -686,7 +686,7 @@ void ImportDependencies::iterateOnCandidateImports(
             for (const QString &cImportName : std::as_const(lb.value())) {
                 CoreImport cImport = coreImport(cImportName);
                 if (languageIsCompatible(vContext.language, cImport.language)) {
-                    for (const Export e : std::as_const(cImport.possibleExports)) {
+                    for (const Export &e : std::as_const(cImport.possibleExports)) {
                         ++benchMark.nPossibleExports;
                         if (e.visibleInVContext(vContext)) {
                             ImportMatchStrength m = e.exportName.matchImport(key, vContext);