diff --git a/gas/ChangeLog b/gas/ChangeLog
index bca4ec028e..f7501d0e78 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,7 @@
+2000-07-22  Alan Modra  <alan@linuxcare.com.au>
+
+	* frags.c (frag_align): Correct absolute section alignment.
+
 2000-07-20  DJ Delorie  <dj@redhat.com>
 
 	* config/obj-coff.c (obj_frob_symbol): revert previous change,
diff --git a/gas/frags.c b/gas/frags.c
index 2b2c91d41d..5c31b7e893 100644
--- a/gas/frags.c
+++ b/gas/frags.c
@@ -303,9 +303,10 @@ frag_align (alignment, fill_character, max)
   if (now_seg == absolute_section)
     {
       addressT new_off;
+      addressT mask;
 
-      new_off = ((abs_section_offset + alignment - 1)
-		 &~ ((1 << alignment) - 1));
+      mask = (~ (addressT) 0) << alignment;
+      new_off = (abs_section_offset + ~ mask) & mask;
       if (max == 0 || new_off - abs_section_offset <= (addressT) max)
 	abs_section_offset = new_off;
     }