diff --git a/cproto.spec b/cproto.spec
index b7bc399..ff2021c 100644
--- a/cproto.spec
+++ b/cproto.spec
@@ -19,7 +19,7 @@ generated parser, so it should not be confused by complex function
 definitions as much as other prototype generators.
 
 %prep
-%setup -q -n cproto-4_7c
+%setup -q -n cproto-4_7d
 
 %build
 export CPP="/lib/cpp"