diff --git a/asm-tests/i386-pc.S b/asm-tests/i386-pc.S
index f6f9a88be..d037744f9 100644
--- a/asm-tests/i386-pc.S
+++ b/asm-tests/i386-pc.S
@@ -1,12 +1,16 @@
 /* on x86 old clang doesn't support .code16
    newer clang supports it but creates 6-byte jumps instead of 3-byte ones
-   which makes us go over boot sector size.  */
+   which makes us go over boot sector size.
+   Starting with 3.9 clang emits 3-byte jumps but still creates 8-bytes movl
+   instead of 5-bytes, so code overflows into data.  */
 
 	.code16
 	jmp far
 	.org 4
 	jmp nearer
 	.org 6
+	movl nearer, %ebx
+	.org 11
 	.space 100
 nearer:
 	.space 200