diff --git a/src/plugins/cmakeprojectmanager/builddirmanager.cpp b/src/plugins/cmakeprojectmanager/builddirmanager.cpp
index 8edc76ae5c7..88c6077c455 100644
--- a/src/plugins/cmakeprojectmanager/builddirmanager.cpp
+++ b/src/plugins/cmakeprojectmanager/builddirmanager.cpp
@@ -231,8 +231,8 @@ void BuildDirManager::parse()
 
 void BuildDirManager::clearCache()
 {
-    auto cmakeCache = Utils::FileName(buildDirectory()).appendPath(QLatin1String("CMakeCache.txt"));
-    auto cmakeFiles = Utils::FileName(buildDirectory()).appendPath(QLatin1String("CMakeFiles"));
+    auto cmakeCache = Utils::FileName(workDirectory()).appendPath(QLatin1String("CMakeCache.txt"));
+    auto cmakeFiles = Utils::FileName(workDirectory()).appendPath(QLatin1String("CMakeFiles"));
 
     const bool mustCleanUp = cmakeCache.exists() || cmakeFiles.exists();
     if (!mustCleanUp)