diff --git a/ext/gd/gd.dsp b/ext/gd/gd.dsp
index e8e3f99a19d..e633d1f5836 100644
--- a/ext/gd/gd.dsp
+++ b/ext/gd/gd.dsp
@@ -168,10 +168,6 @@ SOURCE=.\gdcache.c
 # End Source File
 # Begin Source File
 
-SOURCE=.\gdt1.c
-# End Source File
-# Begin Source File
-
 SOURCE=.\gdttf.c
 # End Source File
 # End Group
@@ -184,10 +180,6 @@ SOURCE=.\gdcache.h
 # End Source File
 # Begin Source File
 
-SOURCE=.\gdt1.h
-# End Source File
-# Begin Source File
-
 SOURCE=.\gdttf.h
 # End Source File
 # Begin Source File