diff --git a/sanlock.spec b/sanlock.spec
index 94c7ac1..f71a5b9 100644
--- a/sanlock.spec
+++ b/sanlock.spec
@@ -29,7 +29,7 @@ The sanlock daemon manages leases for applications on hosts using shared storage
 
 %prep
 %setup -q
-%patch0 .backup0
+%patch0 -p1 -b .backup0
 
 %build
 %set_build_flags