diff --git a/build.cmd b/build.cmd
index 32d7609..dfce940 100644
--- a/build.cmd
+++ b/build.cmd
@@ -1,4 +1,5 @@
-#!cmd.exe
-cat SG_iCal.php | grep -v "BUILD: Remove line" > sgical.php
-DIR /B /S helpers | grep SG_iCal | grep -v svn | sed -e "s/\\/\//g" | xargs cat | grep -v "BUILD: Remove line" >> sgical.php
-DIR /B /S blocks | grep SG_iCal | grep -v svn | sed -e "s/\\/\//g" | xargs cat | grep -v "BUILD: Remove line" >> sgical.php
+@SET OUTPUT=.\sgical.php
+
+cat SG_iCal.php | grep -v "BUILD: Remove line" > %OUTPUT%
+DIR /B /S helpers | grep SG_iCal | grep -v svn | sed -e "s/\\/\//g" | xargs cat | grep -v "BUILD: Remove line" >> %OUTPUT%
+DIR /B /S blocks | grep SG_iCal | grep -v svn | sed -e "s/\\/\//g" | xargs cat | grep -v "BUILD: Remove line" >> %OUTPUT%