diff --git a/src/bool/lucky/luckyFast16.c b/src/bool/lucky/luckyFast16.c
index df6465990..2d2fbf37c 100644
--- a/src/bool/lucky/luckyFast16.c
+++ b/src/bool/lucky/luckyFast16.c
@@ -175,8 +175,6 @@ inline void minimalSwapAndFlipIVar_superFast_lessThen5(word* pInOut, int iVar, i
 {
     int min1, min2, DifStart0, DifStart1, DifStartMin;
     int M[2];   
-    int  blockSize = 1<<iVar;
-//  int  shiftSize = blockSize*4;
 
     M[0] = minTemp0_fast(pInOut, iVar, nWords, &DifStart0); // 0, 3
     M[1] = minTemp1_fast(pInOut, iVar, nWords, &DifStart1); // 1, 2
@@ -512,8 +510,6 @@ inline void minimalSwapAndFlipIVar_superFast_moreThen5(word* pInOut, int iVar, i
     int min1, min2, DifStart0, DifStart1, DifStartMin;
     int M[2];
     word temp[1024];
-    int  blockSize = 1<<(iVar-6);
-//  int  shiftSize = blockSize*4;
 
     M[0] = minTemp0_fast_moreThen5(pInOut, iVar, nWords, &DifStart0); // 0, 3
     M[1] = minTemp1_fast_moreThen5(pInOut, iVar, nWords, &DifStart1); // 1, 2
diff --git a/src/bool/lucky/luckyFast6.c b/src/bool/lucky/luckyFast6.c
index a32a88a43..086a9bc61 100644
--- a/src/bool/lucky/luckyFast6.c
+++ b/src/bool/lucky/luckyFast6.c
@@ -49,7 +49,7 @@ void swapAndFlip(word* pAfter, int nVars, int iVarInPosition, int jVar, char * p
         *pUCanonPhase ^= (1 << iVarInPosition);
         *pUCanonPhase ^= (1 << jVar);
     }
-    if(*pUCanonPhase>>iVarInPosition & (unsigned)1 == 1)
+    if((*pUCanonPhase>>iVarInPosition) & 1)
         Kit_TruthChangePhase_64bit( pAfter, nVars, iVarInPosition );
     
 }
@@ -68,7 +68,7 @@ int luckyCheck(word* pAfter, word* pBefore, int nVars, char * pCanonPerm, unsign
             break;
         }
     }
-    if(uCanonPhase>>nVars & (unsigned)1 == 1)
+    if((uCanonPhase>>nVars) & 1)
         Kit_TruthNot_64bit(pAfter, nVars );
     if(memcmp(pAfter, pBefore, Kit_TruthWordNum_64bit( nVars )*sizeof(word)) == 0)
         return 0;