diff --git a/sys/arm64/arm64/sigtramp.S b/sys/arm64/arm64/sigtramp.S
--- a/sys/arm64/arm64/sigtramp.S
+++ b/sys/arm64/arm64/sigtramp.S
@@ -49,7 +49,7 @@
 
        b       1b
        /* This may be copied to the stack, keep it 16-byte aligned */
-       .align  3
+       .align  4
        .size sigcode, . - sigcode
 esigcode: