diff --git a/src/plugins/cppeditor/cppselectionchanger.cpp b/src/plugins/cppeditor/cppselectionchanger.cpp
index 7b9f6767451..3d31893311b 100644
--- a/src/plugins/cppeditor/cppselectionchanger.cpp
+++ b/src/plugins/cppeditor/cppselectionchanger.cpp
@@ -546,7 +546,7 @@ void CppSelectionChanger::fineTuneASTNodePositions(ASTNodePositions &positions)
 
             // Start position will be the end position minus the size of the actual contents of the
             // literal.
-            int newPosStart = newPosEnd - firstToken.string->size();
+            int newPosStart = newPosEnd - QString::fromUtf8(firstToken.string->chars()).size();
 
             // Skip raw literal parentheses.
             if (isRawLiteral)