diff --git a/rosapps/applications/sysutils/gettype/gettype.rbuild b/rosapps/applications/sysutils/gettype/gettype.rbuild
index 130f57e0cd0..e8ca1c74885 100644
--- a/rosapps/applications/sysutils/gettype/gettype.rbuild
+++ b/rosapps/applications/sysutils/gettype/gettype.rbuild
@@ -1,6 +1,5 @@
 <module name="gettype" type="win32cui" installbase="system32" installname="gettype.exe" unicode="yes">
 	<include base="gettype">.</include>
-	<define name="_WIN32_WINNT">0x0501</define>
 	<library>kernel32</library>
 	<library>shell32</library>
 	<library>mpr</library>
diff --git a/rosapps/applications/sysutils/utils/rosperf/rosperf.rbuild b/rosapps/applications/sysutils/utils/rosperf/rosperf.rbuild
index c4c6fc02f5f..d48ed7a3e5e 100644
--- a/rosapps/applications/sysutils/utils/rosperf/rosperf.rbuild
+++ b/rosapps/applications/sysutils/utils/rosperf/rosperf.rbuild
@@ -1,7 +1,6 @@
 <module name="rosperf" type="win32cui" installbase="system32" installname="rosperf.exe">
     <include base="rosperf">.</include>
     <define name="UNICODE" />
-    <define name="WINVER">0x0501</define>
     <library>version</library>
     <library>msimg32</library>
     <library>gdi32</library>