diff --git a/arch/cris/mm/init.c b/arch/cris/mm/init.c
index 2fdd212..514f46a 100644
--- a/arch/cris/mm/init.c
+++ b/arch/cris/mm/init.c
@@ -25,8 +25,7 @@
 	int codesize, reservedpages, datasize, initsize;
 	unsigned long tmp;
 
-	if(!mem_map)
-		BUG();
+	BUG_ON(!mem_map);
 
 	/* max/min_low_pfn was set by setup.c
 	 * now we just copy it to some other necessary places...