diff --git a/src/dired.c b/src/dired.c
index be654670e9d..143e9477603 100644
--- a/src/dired.c
+++ b/src/dired.c
@@ -999,8 +999,10 @@ which see.  */)
   else
     {
       /* To allow inode numbers beyond 32 bits, separate into 2 24-bit
-	 high parts and a 16-bit bottom part.  */
-      EMACS_INT high_ino = s.st_ino >> 32;
+	 high parts and a 16-bit bottom part.
+	 The code on the next line avoids a compiler warning on some
+	 systems (bug#766).  */
+      EMACS_INT high_ino = s.st_ino >> 31 >> 1;
       EMACS_INT low_ino  = s.st_ino & 0xffffffff;
 
       values[10] = Fcons (make_number (high_ino >> 8),