diff --git a/src/plugins/cmakeprojectmanager/builddirreader.h b/src/plugins/cmakeprojectmanager/builddirreader.h
index 8d5df860248..d23df0020ef 100644
--- a/src/plugins/cmakeprojectmanager/builddirreader.h
+++ b/src/plugins/cmakeprojectmanager/builddirreader.h
@@ -68,7 +68,7 @@ public:
         Utils::Environment environment;
         Utils::FileName cmakeExecutable;
         CMakeTool::Version cmakeVersion;
-        bool cmakeHasServerMode;
+        bool cmakeHasServerMode = false;
         CMakeTool::PathMapper pathMapper;
 
         QByteArray cxxToolChainId;