diff --git a/visualc/zlib.dsp b/visualc/zlib.dsp
index 0fec5b9ac..1f8a80d29 100644
--- a/visualc/zlib.dsp
+++ b/visualc/zlib.dsp
@@ -103,14 +103,6 @@ SOURCE=..\zlib\gzio.c
 # End Source File
 # Begin Source File
 
-SOURCE=..\zlib\infblock.c
-# End Source File
-# Begin Source File
-
-SOURCE=..\zlib\infcodes.c
-# End Source File
-# Begin Source File
-
 SOURCE=..\zlib\inffast.c
 # End Source File
 # Begin Source File
@@ -123,10 +115,6 @@ SOURCE=..\zlib\inftrees.c
 # End Source File
 # Begin Source File
 
-SOURCE=..\zlib\infutil.c
-# End Source File
-# Begin Source File
-
 SOURCE=..\zlib\trees.c
 # End Source File
 # Begin Source File