diff --git a/mozilla/modules/libimg/mngcom/nspng.def b/mozilla/modules/libimg/mngcom/nspng.def
deleted file mode 100644
index cc6c70b783f..00000000000
--- a/mozilla/modules/libimg/mngcom/nspng.def
+++ /dev/null
@@ -1,14 +0,0 @@
-;
-; temp def file for nsmng dll
-;
-
-LIBRARY		nsmng.dll
-DESCRIPTION  	'test dll'
-
-EXPORTS		
-		ImgDInit @1002		PRIVATE
-		ImgDWrite @1003		PRIVATE  
-		ImgDWriteReady @1004	PRIVATE
-		ImgDComplete @1005	PRIVATE
-		ImgDAbort @1006		PRIVATE
-