diff --git a/Jamulus.spec b/Jamulus.spec
index b7c438f..d148877 100644
--- a/Jamulus.spec
+++ b/Jamulus.spec
@@ -53,7 +53,7 @@ collects the audio data from each Jamulus client software, mixes the audio data
 and sends the mix back to each client.
 
 %prep
-%autosetup -n jamulus-r%{tarball_version}
+%autosetup -p1 -n jamulus-r%{tarball_version}
 install %{SOURCE1} .
 
 %build