diff --git a/common_x86_64.h b/common_x86_64.h
index a145abc14..9d0ef4e75 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -195,11 +195,13 @@ static __inline int blas_quickdivide(unsigned int x, unsigned int y){
   unsigned int result;
 
   if (y <= 1) return x;
-  
+
+#if (MAX_CPU_NUMBER > 64)  
   if (y > 64) { 
 	  result = x / y;
 	  return result;
   }
+#endif
 	
   y = blas_quick_divide_table[y];