diff --git a/portable/GCC/ARM_CA9/portASM.S b/portable/GCC/ARM_CA9/portASM.S
index d366aa51c..d55c5f335 100644
--- a/portable/GCC/ARM_CA9/portASM.S
+++ b/portable/GCC/ARM_CA9/portASM.S
@@ -24,7 +24,7 @@
  *
  * 1 tab == 4 spaces!
  */
-
+	.eabi_attribute Tag_ABI_align_preserved, 1
 	.text
 	.arm