diff --git a/rfb/TightPalette.cxx b/rfb/TightPalette.cxx
index 4fe7a74..c4ed04e 100644
--- a/rfb/TightPalette.cxx
+++ b/rfb/TightPalette.cxx
@@ -46,7 +46,7 @@
   }
 }
 
-int TightPalette::insert(rdr::U32 rgb, int numPixels, int bpp)
+int TightPalette::insert(rdr::U32 rgb, int numPixels)
 {
   TightColorList *pnode;
   TightColorList *prev_pnode = NULL;