diff --git a/Headers/gnustep/base/BinaryCStream.h b/Headers/gnustep/base/BinaryCStream.h
index b7567f447..6114005d8 100644
--- a/Headers/gnustep/base/BinaryCStream.h
+++ b/Headers/gnustep/base/BinaryCStream.h
@@ -30,6 +30,8 @@
 
 @interface BinaryCStream : CStream
 
++ setDebugging: (BOOL)f;
+
 @end
 
 #endif /* __BinaryCStream_h_OBJECTS_INCLUDE */
diff --git a/Source/objects/BinaryCStream.h b/Source/objects/BinaryCStream.h
index b7567f447..6114005d8 100644
--- a/Source/objects/BinaryCStream.h
+++ b/Source/objects/BinaryCStream.h
@@ -30,6 +30,8 @@
 
 @interface BinaryCStream : CStream
 
++ setDebugging: (BOOL)f;
+
 @end
 
 #endif /* __BinaryCStream_h_OBJECTS_INCLUDE */