diff --git a/makedefs b/makedefs
index 93b5949..b83a908 100644
--- a/makedefs
+++ b/makedefs
@@ -347,7 +347,7 @@ EOF
 		       fi;;
 		esac
 		;;
-    Linux.3*)	SYSTYPE=LINUX3
+    Linux.[34]*)	SYSTYPE=LINUX3
 		case "$CCARGS" in
 		 *-DNO_DB*) ;;
 		 *) if [ -f /usr/include/db.h ]