diff --git a/libs/win32/sofia/libsofia_sip_ua_static.2008.vcproj b/libs/win32/sofia/libsofia_sip_ua_static.2008.vcproj
index 8f9ff40017..194d36fce9 100644
--- a/libs/win32/sofia/libsofia_sip_ua_static.2008.vcproj
+++ b/libs/win32/sofia/libsofia_sip_ua_static.2008.vcproj
@@ -273,6 +273,10 @@
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_strdup.c"
 					>
 				</File>
+				<File
+					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_string.c"
+					>
+				</File>
 				<File
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_strlst.c"
 					>
@@ -1023,6 +1027,10 @@
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_source.h"
 					>
 				</File>
+				<File
+					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_string.h"
+					>
+				</File>
 				<File
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_strlst.h"
 					>
diff --git a/libs/win32/sofia/libsofia_sip_ua_static.vcproj b/libs/win32/sofia/libsofia_sip_ua_static.vcproj
index 634d8bfdcd..f2a8cd4409 100644
--- a/libs/win32/sofia/libsofia_sip_ua_static.vcproj
+++ b/libs/win32/sofia/libsofia_sip_ua_static.vcproj
@@ -274,6 +274,10 @@
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_strdup.c"
 					>
 				</File>
+				<File
+					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_string.c"
+					>
+				</File>
 				<File
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\su_strlst.c"
 					>
@@ -1024,6 +1028,10 @@
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_source.h"
 					>
 				</File>
+				<File
+					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_string.h"
+					>
+				</File>
 				<File
 					RelativePath="..\..\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_strlst.h"
 					>