diff --git a/src/pow.cpp b/src/pow.cpp
index 81c0df76b..8c498f320 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -190,11 +190,10 @@ arith_uint256 zawy_exponential(arith_uint256 bnTarget,int32_t mult)
 arith_uint256 zawy_ctB(arith_uint256 bnTarget,uint32_t solvetime)
 {
     int64_t num;
-    num = (K * (int64_t)solvetime * solvetime * 1000) / (T * T * 784);
+    num = ((int64_t)solvetime * solvetime * 1000) / (T * T * 784);
     if ( num > 1 )
     {
-        bnTarget /= arith_uint256(K);
-        bnTarget *= arith_uint256(num);
+        bnTarget /= arith_uint256(num);
     }
     return(bnTarget);
 }