diff --git a/OpenCL/m00610_a1-optimized.cl b/OpenCL/m00610_a1-optimized.cl
index e50f6955c..a6728bce4 100644
--- a/OpenCL/m00610_a1-optimized.cl
+++ b/OpenCL/m00610_a1-optimized.cl
@@ -420,8 +420,8 @@ KERNEL_FQ void m00610_s04 (KERN_ATTR_BASIC ())
     w2[3] |= s2[3];
     w3[0] |= s3[0];
     w3[1] |= s3[1];
-    w3[0] |= s3[2];
-    w3[1] |= s3[3];
+    w3[2] |= s3[2];
+    w3[3] |= s3[3];
 
     /**
      * blake2b