1 files changed, 4 insertions, 1 deletions

diff --git a/firmware/crt0.S b/firmware/crt0.S
index 088ea0aff4..e33faa66e5 100644
--- a/firmware/crt0.S
+++ b/firmware/crt0.S
@@ -116,6 +116,9 @@ copy_l:
         mov.l   datacopy_k,r0
         mov.l   data_k,r1
         mov.l   dataend_k,r2
+        /* Don't copy if src and dest are equal */
+        cmp/eq  r0,r1
+        bt      nodatacopy
 copy_l2:
         mov.l   @r0,r3
         mov.l   r3,@r1
@@ -124,7 +127,7 @@ copy_l2:
         cmp/ge  r2,r1
         bf      copy_l2
         nop
-
+nodatacopy:
         /* Munge the main thread stack */
         mov.l   stack_k,r2
         mov.l   deadbeef_k,r0