diff --git a/win32/php4dllts.dsp b/win32/php4dllts.dsp
index d0567fd554a..b409af1f474 100644
--- a/win32/php4dllts.dsp
+++ b/win32/php4dllts.dsp
@@ -341,6 +341,14 @@ SOURCE=..\main\SAPI.h
 SOURCE=..\main\win95nt.h
 # End Source File
 # End Group
+# Begin Source File
+
+SOURCE=..\main\php_streams.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\main\streams.c
+# End Source File
 # End Group
 # Begin Group "Function Modules"