diff --git a/kdf.spec b/kdf.spec
index 4a057c1..ad7950f 100644
--- a/kdf.spec
+++ b/kdf.spec
@@ -42,7 +42,8 @@ pushd %{_target_platform}
 %{cmake_kde4} ..
 popd
 
-make %{?_smp_mflags} -C %{_target_platform}
+# not smp safe
+make -C %{_target_platform}
 
 
 %install