diff --git a/gas/ChangeLog b/gas/ChangeLog
index 955fd2ec643..41e44b5438e 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,7 @@
+2015-11-16  Mike Frysinger  <vapier@gentoo.org>
+
+	* config/tc-microblaze.c (parse_imm): Add an offsetT cast.
+
 2015-11-13  Tristan Gingold  <gingold@adacore.com>
 
 	* configure: Regenerate.
diff --git a/gas/config/tc-microblaze.c b/gas/config/tc-microblaze.c
index ac7c828ccec..0ec24f88217 100644
--- a/gas/config/tc-microblaze.c
+++ b/gas/config/tc-microblaze.c
@@ -739,7 +739,7 @@ parse_imm (char * s, expressionS * e, offsetT min, offsetT max)
     {
       /* Special case: sign extend negative 32-bit values to 64-bits.  */
       if ((e->X_add_number >> 31) == 1)
-	e->X_add_number |= -(1 << 31);
+	e->X_add_number |= -((offsetT) 1 << 31);
 
       if (e->X_add_number < min || e->X_add_number > max)
 	{