diff --git a/libgsf.spec b/libgsf.spec
index 8c8bff6..f9b7462 100644
--- a/libgsf.spec
+++ b/libgsf.spec
@@ -59,7 +59,7 @@ Python bindings for libgsf
 
 %prep
 %setup -q
-%patch0 -p1 -b.gcc39015
+%patch0 -p1 -b .gcc39015
 
 %build
 %configure --disable-gtk-doc --disable-static