diff --git a/libs/freetdm/openzap.vcproj b/libs/freetdm/openzap.vcproj
index 80eed02239..f9eb82b703 100644
--- a/libs/freetdm/openzap.vcproj
+++ b/libs/freetdm/openzap.vcproj
@@ -172,10 +172,6 @@
 				RelativePath=".\src\libteletone_generate.c"
 				>
 			</File>
-			<File
-				RelativePath=".\src\openzap.c"
-				>
-			</File>
 			<File
 				RelativePath=".\src\zap_buffer.c"
 				>
@@ -184,6 +180,10 @@
 				RelativePath=".\src\zap_config.c"
 				>
 			</File>
+			<File
+				RelativePath=".\src\zap_io.c"
+				>
+			</File>
 			<File
 				RelativePath=".\src\zap_skel.c"
 				>
@@ -248,6 +248,12 @@
 					/>
 				</FileConfiguration>
 			</File>
+			<Filter
+				Name="Resource Files"
+				Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+				UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+				>
+			</Filter>
 		</Filter>
 		<Filter
 			Name="Header Files"
@@ -323,12 +329,6 @@
 				>
 			</File>
 		</Filter>
-		<Filter
-			Name="Resource Files"
-			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
-			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
-			>
-		</Filter>
 		<Filter
 			Name="Makefile"
 			>