diff --git a/src/vm_x86.dasc b/src/vm_x86.dasc
index a36d2aa7..44595b85 100644
--- a/src/vm_x86.dasc
+++ b/src/vm_x86.dasc
@@ -6349,7 +6349,7 @@ static void emit_asm_debug(BuildCtx *ctx)
 #else
 	  "\t.byte 0xe\n\t.byte 8\n"		/* def_cfa_offset */
 	  "\t.byte 0x84\n\t.byte 0x2\n"		/* offset ebp (4 for MACH-O)*/
-	  "\t.byte 0xd\n\t.uleb128 0x4\n"	/* def_cfa_register ebp */
+	  "\t.byte 0xd\n\t.byte 0x4\n"		/* def_cfa_register ebp */
 	  "\t.byte 0x83\n\t.byte 0x3\n"		/* offset ebx */
 #endif
 	  "\t.align " BSZPTR "\n"