Index: ext/libicpf/src/libicpf/libicpf.vc90.vcproj
===================================================================
diff -u -N -r4455142ff5bf3754bee26678cc9a84e2f64d3559 -r9a885b0cc0f4f80418997812fd8df255cba22a5b
--- ext/libicpf/src/libicpf/libicpf.vc90.vcproj	(.../libicpf.vc90.vcproj)	(revision 4455142ff5bf3754bee26678cc9a84e2f64d3559)
+++ ext/libicpf/src/libicpf/libicpf.vc90.vcproj	(.../libicpf.vc90.vcproj)	(revision 9a885b0cc0f4f80418997812fd8df255cba22a5b)
@@ -485,6 +485,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\interface.h"
+				>
+			</File>
+			<File
 				RelativePath=".\libicpf.h"
 				>
 			</File>