diff --git a/compiler-rt/lib/builtins/assembly.h b/compiler-rt/lib/builtins/assembly.h
--- a/compiler-rt/lib/builtins/assembly.h
+++ b/compiler-rt/lib/builtins/assembly.h
@@ -191,10 +191,10 @@
 
 #if __ARM_ARCH >= 7
 #define DMB dmb
-#elif __ARM_ARCH >= 6
+#elif __ARM_ARCH >= 5
 #define DMB mcr p15, #0, r0, c7, c10, #5
 #else
-#error only supported on ARMv6+
+#error only supported on ARMv5+
 #endif
 
 #if defined(USE_THUMB_2)