diff --git a/ChangeLog b/ChangeLog
index 18c2dcc..f3543b1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -11,6 +11,8 @@
 	* GSWeb/GSWMultiKeyDictionary.m
 	  Explicitly create a NSMutableDicitonary, see bug
 	  39088
+	* GSWeb/GSWProcFS.m
+	  fix a format string
 
 2013-05-30: Sebastian Reitenbach <sebastia@l00-bugdead-prods.de>
 	* GSWeb/GSWElement.h
diff --git a/GSWeb/GSWProcFS.m b/GSWeb/GSWProcFS.m
index 7d68e74..148f388 100644
--- a/GSWeb/GSWProcFS.m
+++ b/GSWeb/GSWProcFS.m
@@ -41,7 +41,7 @@ RCS_ID("$Id$")
 NSString* formattedByteSizeValue(unsigned int value)
 {
   if (value<1024)
-    return [NSString stringWithFormat:@"%l b",value];
+    return [NSString stringWithFormat:@"%u b",value];
   else if (value<1024L*1024L)
     return [NSString stringWithFormat:@"%.3f Kb",
 		     (((double)value)/1024)];