diff --git a/gfx/thebes/src/gfxPangoFonts.cpp b/gfx/thebes/src/gfxPangoFonts.cpp
index 2322a5f5ff2..31e6f2886fe 100644
--- a/gfx/thebes/src/gfxPangoFonts.cpp
+++ b/gfx/thebes/src/gfxPangoFonts.cpp
@@ -553,8 +553,6 @@ gfxPangoFont::GetMetrics()
  ** gfxPangoTextRun
  **/
 
-THEBES_IMPL_REFCOUNTING(gfxPangoTextRun)
-
 #ifndef THEBES_USE_PANGO_CAIRO
 
 #define AUTO_GLYPHBUF_SIZE 100