diff --git a/Headers/gnustep/base/NSSet.h b/Headers/gnustep/base/NSSet.h
index 747fbbb9f..e8026dc94 100644
--- a/Headers/gnustep/base/NSSet.h
+++ b/Headers/gnustep/base/NSSet.h
@@ -1,4 +1,4 @@
-/* Interface for NSSet for GNUStep
+/* Interface for NSSet, NSMutableSet, NSCountedSet for GNUStep
    Copyright (C) 1995 Free Software Foundation, Inc.
 
    Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
@@ -77,4 +77,19 @@
 
 @end
 
+@interface NSCountedSet : NSMutableSet <NSCoding, NSCopying>
+
++ allocWithZone: (NSZone*)zone;
+- initWithCapacity: (unsigned)numItems;
+- initWithArray: (NSArray*)array;
+- initWithSet: (NSSet*)otherSet;
+
+- (void) addObject: anObject;
+- (void) removeObject: anObject;
+- (unsigned int) countForObject: anObject;
+- (NSEnumerator*) objectEnumerator;
+
+@end
+
+
 #endif
diff --git a/Source/objects/NSSet.h b/Source/objects/NSSet.h
index bfbcb542b..767fcd184 100644
--- a/Source/objects/NSSet.h
+++ b/Source/objects/NSSet.h
@@ -36,11 +36,9 @@
 @end
 
 @interface NSMutableSet (GNU)
-#if 0
 + (unsigned) defaultCapacity;
 - initWithType: (const char *)contentEncoding
     capacity: (unsigned)aCapacity;
-#endif
 @end
 
 @interface NSCountedSet (GNU) <Collecting>