diff --git a/OpenCL/m25500-pure.cl b/OpenCL/m25500-pure.cl
index c5be7fef7..c7c83a4ac 100644
--- a/OpenCL/m25500-pure.cl
+++ b/OpenCL/m25500-pure.cl
@@ -334,7 +334,7 @@ KERNEL_FQ void m25500_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
 
   // iv
 
-  const u32 iv[4] = {
+  u32 iv[4] = {
     esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0],
     esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1],
     esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2],