diff --git a/memstomp.spec b/memstomp.spec
index 646fbc8..e120acb 100644
--- a/memstomp.spec
+++ b/memstomp.spec
@@ -42,17 +42,17 @@ overlapping memory arguments to certain library calls.
 
 %prep
 %setup -q -n %{name}-%{version}-%{githash}
-%patch0 -p1
-%patch1 -p1
-%patch2 -p1
-%patch3 -p1
-%patch4 -p1
-%patch5 -p1
-%patch6 -p1
-%patch7 -p1
-%patch8 -p1
-%patch9 -p1
-%patch10 -p1
+%patch -P0 -p1
+%patch -P1 -p1
+%patch -P2 -p1
+%patch -P3 -p1
+%patch -P4 -p1
+%patch -P5 -p1
+%patch -P6 -p1
+%patch -P7 -p1
+%patch -P8 -p1
+%patch -P9 -p1
+%patch -P10 -p1
 
 
 %build