Typo fix.
diff --git a/lib/gif_lib.h b/lib/gif_lib.h
index 6f43bdc..6c2f5bf 100644
--- a/lib/gif_lib.h
+++ b/lib/gif_lib.h
@@ -8,7 +8,7 @@
  * History:                                                                    
  * 14 Jun 89 - Version 1.0 by Gershon Elber.                                   
  *  3 Sep 90 - Version 1.1 by Gershon Elber (Support for Gif89, Unique names)  
- * 15 Sep 90 - Version 2.0 by Eric S. Raymond (Changes to suoport GIF slurp)   
+ * 15 Sep 90 - Version 2.0 by Eric S. Raymond (Changes to support GIF slurp)   
  * 26 Jun 96 - Version 3.0 by Eric S. Raymond (Full GIF89 support)
  * 17 Dec 98 - Version 4.0 by Toshio Kuratomi (Fix extension writing code)     
  *****************************************************************************/