diff --git a/kdelibs3.spec b/kdelibs3.spec
index 4b0eadf..018b9fb 100644
--- a/kdelibs3.spec
+++ b/kdelibs3.spec
@@ -270,7 +270,7 @@ format for easy browsing
 sed -i -e "s,^#define KDE_VERSION_STRING .*,#define KDE_VERSION_STRING \"%{version}-%{release} %{distname}\"," kdecore/kdeversion.h
 
 # hack/fix for newer automake
-sed -iautomake -e 's|automake\*1\.10\*|automake*1.1[0-5]*|' admin/cvs.sh
+sed -i.automake -e 's|automake\*1\.10\*|automake*1.1[0-5]*|' admin/cvs.sh
 diff -u admin/cvs.sh.automake admin/cvs.sh
 make -f admin/Makefile.common cvs