diff --git a/builds/msvc/libzmq/libzmq.vcproj b/builds/msvc/libzmq/libzmq.vcproj
index 967043c5..0a6bb497 100644
--- a/builds/msvc/libzmq/libzmq.vcproj
+++ b/builds/msvc/libzmq/libzmq.vcproj
@@ -294,6 +294,10 @@
 				RelativePath="..\..\..\src\ip.cpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\..\src\ipc_address.cpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\..\src\ipc_connecter.cpp"
 				>
@@ -552,6 +556,10 @@
 				RelativePath="..\..\..\src\ip.hpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\..\src\ipc_address.hpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\..\src\ipc_connecter.hpp"
 				>
diff --git a/src/ipc_address.cpp b/src/ipc_address.cpp
index f7252c58..6a471a61 100644
--- a/src/ipc_address.cpp
+++ b/src/ipc_address.cpp
@@ -20,7 +20,7 @@
 
 #include "ipc_address.hpp"
 
-#if !defined ZMQ_HAVE_WINDOWS || !defined ZMQ_HAVE_OPENVMS
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
 
 #include "err.hpp"