diff --git a/src/include/Makefile.Vx b/src/include/Makefile.Vx
index 44fc10f87..cc2723c22 100755
--- a/src/include/Makefile.Vx
+++ b/src/include/Makefile.Vx
@@ -2,6 +2,7 @@ TOP = ../../..
 include $(TOP)/config/CONFIG_BASE
 
 OSINC += osiSock.h
+OSINC += osiFileName.h
 
 include $(TOP)/config/RULES.Vx