diff --git a/erlang.spec b/erlang.spec
index 27fbd72..27e4b00 100644
--- a/erlang.spec
+++ b/erlang.spec
@@ -910,7 +910,7 @@ Provides support for XML 1.0.
 ### END OF AUTOGENERATED LIST ###
 
 %prep
-%autosetup -n otp-OTP-%{version}
+%autosetup -p1 -n otp-OTP-%{version}
 
 # FIXME we should come up with a better solution
 # remove shipped zlib sources