diff --git a/common_x86_64.h b/common_x86_64.h
index 6fa0c4c1d..5c7a0238c 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -214,9 +214,9 @@ static __inline unsigned int blas_quickdivide(unsigned int x, unsigned int y){
 #endif
 	
   y = blas_quick_divide_table[y];
-fprintf(stderr,"y returned from divide table for %d is %d\n",yy,y);
+fprintf(stderr,"y returned from divide table for %u is %u\n",yy,y);
   __asm__ __volatile__  ("mull %0" :"=d" (result), "+a"(x) : "0" (y));
-fprintf(stderr,"quickdivide returning %d\n",result);
+fprintf(stderr,"quickdivide returning %u\n",result);
   return result;
 }
 #endif