1 files changed, 3 insertions, 3 deletions
diff --git a/time.c b/time.c
index a1f963943f..d0c2de4a8d 100644
--- a/time.c
+++ b/time.c
@@ -1900,7 +1900,7 @@ time_mdump(time)
     if ((tm->tm_year & 0xffff) != tm->tm_year)
 	rb_raise(rb_eArgError, "year too big to marshal");
 
-    p = 0x1          << 31 | /*  1 */
+    p = 0x1UL        << 31 | /*  1 */
 	tm->tm_year  << 14 | /* 16 */
 	tm->tm_mon   << 10 | /*  4 */
 	tm->tm_mday  <<  5 | /*  5 */
@@ -1976,12 +1976,12 @@ time_mload(time, str)
 	s |= buf[i]<<(8*(i-4));
     }
 
-    if ((p & (1<<31)) == 0) {
+    if ((p & (1UL<<31)) == 0) {
 	sec = p;
 	usec = s;
     }
     else {
-	p &= ~(1<<31);
+       p &= ~(1UL<<31);
 	tm.tm_year = (p >> 14) & 0xffff;
 	tm.tm_mon  = (p >> 10) & 0xf;
 	tm.tm_mday = (p >>  5) & 0x1f;