diff --git a/src/cas/build/Makefile b/src/cas/build/Makefile
index 91e33bbba..283f8e52b 100644
--- a/src/cas/build/Makefile
+++ b/src/cas/build/Makefile
@@ -68,6 +68,7 @@ LIBSRCS += caServerIO.cc
 LIBSRCS += casIntfIO.cc
 LIBSRCS += casDGIntfIO.cc
 LIBSRCS += casStreamIO.cc
+LIBSRCS += ipIgnoreEntry.cc
 
 LIBRARY = cas
 DLL_LIBS = ca gdd Com