diff --git a/ghc-zlib.spec b/ghc-zlib.spec
index 4dc5b15..444cefe 100644
--- a/ghc-zlib.spec
+++ b/ghc-zlib.spec
@@ -43,7 +43,7 @@ This package provides the shared library.
 %endif
 
 
-%ghc_lib_package
+%{?ghc_lib_package}
 
 
 %prep