diff --git a/ChangeLog b/ChangeLog
index 7c7c88d..919d4f1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,9 @@
 	* Framework/GNUmakefile: Include PCFileNameField.h and
 	PCFileNameIcon.h in ProjectCenter_HEADER_FILES as 
 	referenced by PCProjectInspector.h [fixes bug #21619]
+	* Framework/PCProject.m: 
+	(fileTypesForCategoryKey:): add "nib" as recognizable interface 
+	file type.
 
 2009-01-13 Riccardo Mottola <rmottola@users.sf.net>
 
diff --git a/Framework/PCProject.m b/Framework/PCProject.m
index 25bb1b0..31341bf 100644
--- a/Framework/PCProject.m
+++ b/Framework/PCProject.m
@@ -896,7 +896,7 @@ NSString
     }
   else if ([key isEqualToString:PCInterfaces])
     {
-      return [NSArray arrayWithObjects:@"gmodel",@"gorm", @"gsmarkup", nil];
+      return [NSArray arrayWithObjects:@"gmodel",@"gorm", @"gsmarkup", @"nib", nil];
     }
   else if ([key isEqualToString:PCImages])
     {