diff --git a/util/led/byte_order.c b/util/led/byte_order.c
index 0172ec3d..08120b0b 100644
--- a/util/led/byte_order.c
+++ b/util/led/byte_order.c
@@ -26,7 +26,7 @@ determine_ordering()
 		bytes_reversed = TRUE;
 	sp = (short *)&l;
 	sp[0] = 0x0001; sp[1] = 0x0002;
-	if (l != 0x0001 + (0x0002 << 16))
+	if (l != 0x0001 + (0x0002L << 16))
 		words_reversed = TRUE;
 }
 
diff --git a/util/led/mach.c b/util/led/mach.c
index e17bf121..b9355076 100644
--- a/util/led/mach.c
+++ b/util/led/mach.c
@@ -6,7 +6,7 @@
  * Now for Vax 11/750.
  */
 
-#define K 1024
+#define K 1024L
 
 	mems[ALLOEMIT + 0].mem_left = 64 * K;
 	mems[ALLOEMIT + 1].mem_left = 64 * K;