diff --git a/pypy3.spec b/pypy3.spec
index 934a434..3c5f5c5 100644
--- a/pypy3.spec
+++ b/pypy3.spec
@@ -315,6 +315,7 @@ find lib-python/%{pylibver} -name "*.py" -exec \
     \;
 
 %build
+free
 
 BuildPyPy() {
   ExeName=$1