diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 67fefb59d40e52e5b65fa47d5562ac1016d1c6b1..059e762e8995e4461871725d61f4b65f8e43a17b 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -216,7 +216,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
 	 * bits we are interested in.  But there are some bits which
 	 * indicate errors in DSISR but can validly be set in SRR1.
 	 */
-	if (trap == 0x400)
+	if (is_exec)
 		error_code &= 0x48200000;
 	else
 		is_write = error_code & DSISR_ISSTORE;