diff --git a/ChangeLog b/ChangeLog
index f4d665c00..fcee2d02f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Jan  9 15:20:00 1999  Richard Frith-Macdonald <richard@brainstorm.co.uk>
+
+        * Source/GSTextStorage.m: ([-attributesAtIndex:effectiveRange:])
+        fixed illegal parameter - reported by jagapen@whitewater.chem.wisc.edu
+
 Sat Jan  8 23:50:38 2000  Nicola Pero  <n.pero@mi.flashnet.it>
 
 	* Source/NSColorList.m: Implemented reading available color lists
diff --git a/Source/GSTextStorage.m b/Source/GSTextStorage.m
index b3133044d..58c2db098 100644
--- a/Source/GSTextStorage.m
+++ b/Source/GSTextStorage.m
@@ -330,8 +330,9 @@ _attributesAtIndexEffectiveRange(
 - (NSDictionary*) attributesAtIndex: (unsigned)index
 		     effectiveRange: (NSRange*)aRange
 {
+  unsigned	dummy;
   return _attributesAtIndexEffectiveRange(
-    index, aRange, [textChars length], infoArray, NULL);
+    index, aRange, [textChars length], infoArray, &dummy);
 }
 
 /*