diff --git a/src/codegen_new/codegen_ops_helpers.c b/src/codegen_new/codegen_ops_helpers.c
index 6a3e8f6d8..6d8cbfd3a 100644
--- a/src/codegen_new/codegen_ops_helpers.c
+++ b/src/codegen_new/codegen_ops_helpers.c
@@ -62,7 +62,7 @@ int codegen_can_unroll_full(codeblock_t *block, ir_data_t *ir, uint32_t next_pc,
                 return 0;
 
         max_unroll = UNROLL_MAX_UOPS / ((ir->wr_pos-start)+6);
-        if (max_unroll > (UNROLL_MAX_REG_REFERENCES / max_version_refcount))
+        if ((max_version_refcount != 0) && (max_unroll > (UNROLL_MAX_REG_REFERENCES / max_version_refcount)))
                 max_unroll = (UNROLL_MAX_REG_REFERENCES / max_version_refcount);
         if (max_unroll > UNROLL_MAX_COUNT)
                 max_unroll = UNROLL_MAX_COUNT;