diff --git a/build/workspaces/clean-workspaces.sh b/build/workspaces/clean-workspaces.sh
index fa7a6f626e..da0a25f2a3 100755
--- a/build/workspaces/clean-workspaces.sh
+++ b/build/workspaces/clean-workspaces.sh
@@ -61,6 +61,7 @@ fi
 (cd ../premake/premake5/build/gmake2.bsd && ${MAKE} clean)
 (cd ../premake/premake5/build/gmake2.macosx && ${MAKE} clean)
 (cd ../premake/premake5/build/gmake2.unix && ${MAKE} clean)
+(cd ../premake/ && rm -f .already-built)
 
 echo "Removing generated stub and test files..."