--- quotasys.c
+++ quotasys.c
@@ -366,10 +366,10 @@
 	if (format)
 		for (i = 3; i > 0; i--)
 			if (space >= (1LL << (QUOTABLOCK_BITS*i))*100) {
-				sprintf(buf, "%Lu%c", (space+(1 << (QUOTABLOCK_BITS*i))-1) >> (QUOTABLOCK_BITS*i), suffix[i]);
+				sprintf(buf, "%llu%c", ((space+(1 << (QUOTABLOCK_BITS*i))-1) >> (QUOTABLOCK_BITS*i)), suffix[i]);
 				return;
 			}
-	sprintf(buf, "%Lu", space);
+	sprintf(buf, "%llu", space);
 }
 
 /*