diff --git a/src/plugins/cppeditor/compileroptionsbuilder.cpp b/src/plugins/cppeditor/compileroptionsbuilder.cpp
index 5f092121214..8b7dd11b2d7 100644
--- a/src/plugins/cppeditor/compileroptionsbuilder.cpp
+++ b/src/plugins/cppeditor/compileroptionsbuilder.cpp
@@ -875,7 +875,8 @@ void CompilerOptionsBuilder::evaluateCompilerFlags()
             || option.startsWith("/M", Qt::CaseSensitive)
             || option.startsWith(includeUserPathOption)
             || option.startsWith(includeSystemPathOption)
-            || option.startsWith(includeUserPathOptionWindows)) {
+            || option.startsWith(includeUserPathOptionWindows)
+            || option.startsWith("-flto")) {
             // Optimization and run-time flags.
             continue;
         }