diff --git a/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.dsp b/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.dsp
index e0f99ae3a4..6548ce4160 100644
--- a/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.dsp
+++ b/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.dsp
@@ -341,7 +341,7 @@ SOURCE="..\..\libsofia-sip-ua\su\memspn.c"
 # End Source File
 # Begin Source File
 
-SOURCE="..\..\libsofia-sip-ua\su\strcasestr.c"
+SOURCE="..\..\libsofia-sip-ua\su\su_string.c"
 # End Source File
 # Begin Source File
 
@@ -865,6 +865,10 @@ SOURCE="..\..\libsofia-sip-ua\su\sofia-sip\string0.h"
 # End Source File
 # Begin Source File
 
+SOURCE="..\..\libsofia-sip-ua\su\sofia-sip\su_string.h"
+# End Source File
+# Begin Source File
+
 SOURCE="..\..\libsofia-sip-ua\su\sofia-sip\su.h"
 # End Source File
 # Begin Source File
diff --git a/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.vcproj b/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.vcproj
index a6d648090e..584fc29853 100644
--- a/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.vcproj
+++ b/libs/sofia-sip/win32/libsofia-sip-ua-static/libsofia_sip_ua_static.vcproj
@@ -1395,7 +1395,7 @@
 					</FileConfiguration>
 				</File>
 				<File
-					RelativePath="..\..\libsofia-sip-ua\su\strcasestr.c"
+					RelativePath="..\..\libsofia-sip-ua\su\su_string.c"
 					>
 					<FileConfiguration
 						Name="Debug|Win32"
@@ -3828,6 +3828,10 @@
 					RelativePath="..\..\libsofia-sip-ua\su\sofia-sip\string0.h"
 					>
 				</File>
+				<File
+					RelativePath="..\..\libsofia-sip-ua\su\sofia-sip\su_string.h"
+					>
+				</File>
 				<File
 					RelativePath="..\..\libsofia-sip-ua\su\sofia-sip\su.h"
 					>