diff --git a/sudo.pp b/sudo.pp
index c8e771d67..eba688478 100644
--- a/sudo.pp
+++ b/sudo.pp
@@ -19,7 +19,7 @@ still allow people to get their work done."
 	summary="Configurable super-user privileges"
 
 	# Convert to 4 part version for AIX, including patch level
-	pp_aix_version=`echo $version|sed -e 's/\([0-9]*\.[0-9]*\.[0-9]*\)$/\1.0/' -e 's/[^0-9]*\([0-9]*\)$/.\1/'`
+	pp_aix_version=`echo $version|sed -e 's/^\([0-9]*\.[0-9]*\.[0-9]*\)p\([0-9]*\)$/\1.\2/' -e 's/^\([0-9]*\.[0-9]*\.[0-9]*\)[^0-9\.].*$/\1.0/'`
 %endif
 
 %if [kit]