diff --git a/OpenCL/m05100_a0.cl b/OpenCL/m05100_a0.cl
index 9f991831a..5f6593b21 100644
--- a/OpenCL/m05100_a0.cl
+++ b/OpenCL/m05100_a0.cl
@@ -52,18 +52,6 @@ __kernel void m05100_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
 
   const u32 pw_len = pws[gid].pw_len;
 
-  /**
-   * digest
-   */
-
-  const u32 search[4] =
-  {
-    digests_buf[digests_offset].digest_buf[DGST_R0],
-    digests_buf[digests_offset].digest_buf[DGST_R1],
-    digests_buf[digests_offset].digest_buf[DGST_R2],
-    digests_buf[digests_offset].digest_buf[DGST_R3]
-  };
-
   /**
    * loop
    */
@@ -164,14 +152,11 @@ __kernel void m05100_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_M_SIMD (a, b, e, f);
-
-    COMPARE_M_SIMD (b, c, e, f);
-
-    COMPARE_M_SIMD (c, d, e, f);
+    COMPARE_M_SIMD (a, b, z, z);
+    COMPARE_M_SIMD (b, c, z, z);
+    COMPARE_M_SIMD (c, d, z, z);
   }
 }
 
@@ -221,8 +206,8 @@ __kernel void m05100_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
   {
     digests_buf[digests_offset].digest_buf[DGST_R0],
     digests_buf[digests_offset].digest_buf[DGST_R1],
-    digests_buf[digests_offset].digest_buf[DGST_R2],
-    digests_buf[digests_offset].digest_buf[DGST_R3]
+    0,
+    0
   };
 
   /**
@@ -325,14 +310,11 @@ __kernel void m05100_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_S_SIMD (a, b, e, f);
-
-    COMPARE_S_SIMD (b, c, e, f);
-
-    COMPARE_S_SIMD (c, d, e, f);
+    COMPARE_S_SIMD (a, b, z, z);
+    COMPARE_S_SIMD (b, c, z, z);
+    COMPARE_S_SIMD (c, d, z, z);
   }
 }
 
diff --git a/OpenCL/m05100_a1.cl b/OpenCL/m05100_a1.cl
index d9eb91d6a..795f883a3 100644
--- a/OpenCL/m05100_a1.cl
+++ b/OpenCL/m05100_a1.cl
@@ -205,14 +205,11 @@ __kernel void m05100_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_M_SIMD (a, b, e, f);
-
-    COMPARE_M_SIMD (b, c, e, f);
-
-    COMPARE_M_SIMD (c, d, e, f);
+    COMPARE_M_SIMD (a, b, z, z);
+    COMPARE_M_SIMD (b, c, z, z);
+    COMPARE_M_SIMD (c, d, z, z);
   }
 }
 
@@ -262,8 +259,8 @@ __kernel void m05100_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
   {
     digests_buf[digests_offset].digest_buf[DGST_R0],
     digests_buf[digests_offset].digest_buf[DGST_R1],
-    digests_buf[digests_offset].digest_buf[DGST_R2],
-    digests_buf[digests_offset].digest_buf[DGST_R3]
+    0,
+    0
   };
 
   /**
@@ -421,14 +418,11 @@ __kernel void m05100_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_S_SIMD (a, b, e, f);
-
-    COMPARE_S_SIMD (b, c, e, f);
-
-    COMPARE_S_SIMD (c, d, e, f);
+    COMPARE_S_SIMD (a, b, z, z);
+    COMPARE_S_SIMD (b, c, z, z);
+    COMPARE_S_SIMD (c, d, z, z);
   }
 }
 
diff --git a/OpenCL/m05100_a3.cl b/OpenCL/m05100_a3.cl
index 90365c9bc..5a41ae237 100644
--- a/OpenCL/m05100_a3.cl
+++ b/OpenCL/m05100_a3.cl
@@ -145,14 +145,11 @@ void m05100m (u32 w0[4], u32 w1[4], u32 w2[4], u32 w3[4], const u32 pw_len, __gl
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_M_SIMD (a, b, e, f);
-
-    COMPARE_M_SIMD (b, c, e, f);
-
-    COMPARE_M_SIMD (c, d, e, f);
+    COMPARE_M_SIMD (a, b, z, z);
+    COMPARE_M_SIMD (b, c, z, z);
+    COMPARE_M_SIMD (c, d, z, z);
   }
 }
 
@@ -173,8 +170,8 @@ void m05100s (u32 w0[4], u32 w1[4], u32 w2[4], u32 w3[4], const u32 pw_len, __gl
   {
     digests_buf[digests_offset].digest_buf[DGST_R0],
     digests_buf[digests_offset].digest_buf[DGST_R1],
-    digests_buf[digests_offset].digest_buf[DGST_R2],
-    digests_buf[digests_offset].digest_buf[DGST_R3]
+    0,
+    0
   };
 
   /**
@@ -293,14 +290,11 @@ void m05100s (u32 w0[4], u32 w1[4], u32 w2[4], u32 w3[4], const u32 pw_len, __gl
     c += MD5M_C;
     d += MD5M_D;
 
-    u32x e = 0;
-    u32x f = 0;
+    u32x z = 0;
 
-    COMPARE_S_SIMD (a, b, e, f);
-
-    COMPARE_S_SIMD (b, c, e, f);
-
-    COMPARE_S_SIMD (c, d, e, f);
+    COMPARE_S_SIMD (a, b, z, z);
+    COMPARE_S_SIMD (b, c, z, z);
+    COMPARE_S_SIMD (c, d, z, z);
   }
 }