diff --git a/build-mkbaselibs-sle.spec b/build-mkbaselibs-sle.spec
index c168d0d..419e0db 100644
--- a/build-mkbaselibs-sle.spec
+++ b/build-mkbaselibs-sle.spec
@@ -24,7 +24,7 @@ Version:        20170720
 Release:        0
 #!BuildIgnore:  build-mkbaselibs
 Provides:       build-mkbaselibs
-Source:         build-%{version}.tar.gz
+Source:         obs-build-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:      noarch
 
@@ -35,7 +35,7 @@ for generating base lib packages.
 This is the SLE variant including IA64 binary generation.
 
 %prep
-%setup -q -n build-%{version}
+%setup -q -n obs-build-%{version}
 
 %build