diff --git a/grace.spec b/grace.spec
index b49a52d..b9a2529 100644
--- a/grace.spec
+++ b/grace.spec
@@ -65,7 +65,7 @@ Install these files if you need to compile software that requires grace.
 
 # avoid duplicating debian patch
 %patch2 -p1
-patch -p0 < debian/patches/tmpnam_to_mkstemp.diff
+patch -p1 < debian/patches/tmpnam_to_mkstemp.diff
 
 # remove stripping option to have meaningfull debuginfo packages
 sed -i -e 's/^\(.*INSTALL_PROGRAM.*\) -s /\1 /' */Makefile
@@ -227,6 +227,7 @@ fi
 %changelog
 * Mon Sep 29 2008 José Matos <jamatos[AT]fc.up.pt> - 5.1.22-1
 - new upstream release (5.1.22)
+- apply debian patches with -p1
 
 * Thu Feb 14 2008 José Matos <jamatos[AT]fc.up.pt> - 5.1.21-9
 - Rebuild for gcc 4.3