diff --git a/bin/build-sip-msw b/bin/build-sip-msw
index f7da5bb7..7700bfe3 100644
--- a/bin/build-sip-msw
+++ b/bin/build-sip-msw
@@ -20,7 +20,7 @@ fi
 MYBINDIR=$(dirname $(readlink -f $0))
 
 cd /c/projects/sip/sip
-SIPVER=`$PYTHON configure.py --version | grep -v "This is SIP"`
+SIPVER=$($PYTHON -c "import sys,configure; sys.stdout.write(configure.sip_version_str);")
 
 $PYTHON configure.py \
     --sip-module wx.siplib \