diff --git a/OpenCL/m24800_a0-pure.cl b/OpenCL/m24800_a0-pure.cl
index 4140ed966..54ae82f8c 100644
--- a/OpenCL/m24800_a0-pure.cl
+++ b/OpenCL/m24800_a0-pure.cl
@@ -52,9 +52,9 @@ KERNEL_FQ void m24800_mxx (KERN_ATTR_RULES ())
     u32 t[128] = { 0 };
 
     // make it unicode.
-    for (u32 i = 0, idx = 0; idx < tmp.pw_len; i += 2, idx += 1)
+    for (u32 i = 0, idx = 0; i < tmp.pw_len; i += 4, idx += 1)
     {
-      make_utf16beN (&tmp.i[idx], &t[i], &t[i+1]);
+      make_utf16beN (&tmp.i[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     // hash time
@@ -123,9 +123,9 @@ KERNEL_FQ void m24800_sxx (KERN_ATTR_RULES ())
     u32 t[128] = { 0 };
 
     // make it unicode.
-    for (u32 i = 0, idx = 0; idx < tmp.pw_len; i += 2, idx += 1)
+    for (u32 i = 0, idx = 0; i < tmp.pw_len; i += 4, idx += 1)
     {
-      make_utf16beN (&tmp.i[idx], &t[i], &t[i+1]);
+      make_utf16beN (&tmp.i[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     // hash time
diff --git a/OpenCL/m24800_a1-pure.cl b/OpenCL/m24800_a1-pure.cl
index df4733feb..7782975f1 100644
--- a/OpenCL/m24800_a1-pure.cl
+++ b/OpenCL/m24800_a1-pure.cl
@@ -69,9 +69,9 @@ KERNEL_FQ void m24800_mxx (KERN_ATTR_BASIC ())
     u32 t[128] = { 0 };
 
     // make it unicode.
-    for (u32 i = 0, idx = 0; idx < pw_len + comb_len; i += 2, idx += 1)
+    for (u32 i = 0, idx = 0; i < pw_len + comb_len; i += 4, idx += 1)
     {
-        make_utf16beN (&c[idx], &t[i], &t[i+1]);
+      make_utf16beN (&c[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     sha1_hmac_ctx_t ctx;
@@ -158,9 +158,9 @@ KERNEL_FQ void m24800_sxx (KERN_ATTR_BASIC ())
     u32 t[128] = { 0 };
 
     // make it unicode.
-    for (u32 i = 0, idx = 0; idx < pw_len + comb_len; i += 2, idx += 1)
+    for (u32 i = 0, idx = 0; i < pw_len + comb_len; i += 4, idx += 1)
     {
-        make_utf16beN (&c[idx], &t[i], &t[i+1]);
+      make_utf16beN (&c[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     sha1_hmac_ctx_t ctx;
diff --git a/OpenCL/m24800_a3-pure.cl b/OpenCL/m24800_a3-pure.cl
index 825b256ca..51d78beb9 100644
--- a/OpenCL/m24800_a3-pure.cl
+++ b/OpenCL/m24800_a3-pure.cl
@@ -54,9 +54,10 @@ KERNEL_FQ void m24800_mxx (KERN_ATTR_VECTOR ())
 
     u32x t[128] = { 0 };
 
-    for (u32 i = 0, idx = 0; idx < pw_len; i += 2, idx += 1)
+    // make it unicode.
+    for (u32 i = 0, idx = 0; i < pw_len; i += 4, idx += 1)
     {
-      make_utf16beN (&w[idx], &t[i + 0], &t[i + 1]);
+      make_utf16beN (&w[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     sha1_hmac_ctx_vector_t ctx;
@@ -128,9 +129,10 @@ KERNEL_FQ void m24800_sxx (KERN_ATTR_VECTOR ())
 
     u32x t[128] = { 0 };
 
-    for (u32 i = 0, idx = 0; idx < pw_len; i += 2, idx += 1)
+    // make it unicode.
+    for (u32 i = 0, idx = 0; i < pw_len; i += 4, idx += 1)
     {
-      make_utf16beN (&w[idx], &t[i + 0], &t[i + 1]);
+      make_utf16beN (&w[idx], &t[(idx * 2) + 0], &t[(idx * 2) + 1]);
     }
 
     sha1_hmac_ctx_vector_t ctx;