diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
index c8eedc604984..5aceb83b3f5c 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -82,7 +82,7 @@
 
 	.macro	enable_dbg_if_not_stepping, tmp
 	mrs	\tmp, mdscr_el1
-	tbnz	\tmp, #1, 9990f
+	tbnz	\tmp, #0, 9990f
 	enable_dbg
 9990:
 	.endm