diff --git a/rosapps/applications/net/netreg/netreg.rbuild b/rosapps/applications/net/netreg/netreg.rbuild
index db68820a1cd..49e37c72f28 100644
--- a/rosapps/applications/net/netreg/netreg.rbuild
+++ b/rosapps/applications/net/netreg/netreg.rbuild
@@ -4,7 +4,7 @@
 	<library>user32</library>
 	<library>ws2_32</library>
 	<library>advapi32</library>
-	<compilerflag compiler="cpp">-Wno-non-virtual-dtor</compilerflag>
+	<compilerflag compiler="cxx">-Wno-non-virtual-dtor</compilerflag>
 	<file>netreg.cpp</file>
 	<file>netreg.rc</file>
 </module>
diff --git a/rosapps/applications/net/roshttpd/roshttpd.rbuild b/rosapps/applications/net/roshttpd/roshttpd.rbuild
index 88ca4d0b3bd..b013c71aefc 100644
--- a/rosapps/applications/net/roshttpd/roshttpd.rbuild
+++ b/rosapps/applications/net/roshttpd/roshttpd.rbuild
@@ -6,7 +6,7 @@
 	<library>kernel32</library>
 	<library>ws2_32</library>
 	<library>user32</library>
-	<compilerflag compiler="cpp">-Wno-non-virtual-dtor</compilerflag>
+	<compilerflag compiler="cxx">-Wno-non-virtual-dtor</compilerflag>
 	<file>config.cpp</file>
 	<file>error.cpp</file>
 	<file>http.cpp</file>
diff --git a/rostests/rosautotest/rosautotest.rbuild b/rostests/rosautotest/rosautotest.rbuild
index 7213c05b89f..3d591a74eee 100644
--- a/rostests/rosautotest/rosautotest.rbuild
+++ b/rostests/rosautotest/rosautotest.rbuild
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../../tools/rbuild/project.dtd">
 <module name="rosautotest" type="win32cui" installbase="system32" installname="rosautotest.exe" unicode="yes">
-	<compilerflag compiler="cpp">-fno-rtti</compilerflag>
+	<compilerflag compiler="cxx">-fno-rtti</compilerflag>
 	<include base="rosautotest">.</include>
 	<library>advapi32</library>
 	<library>kernel32</library>