diff --git a/.nant/local.include b/.nant/local.include
index 14fd3c03c6..94398a2486 100644
--- a/.nant/local.include
+++ b/.nant/local.include
@@ -142,6 +142,8 @@
   </exec>
   <fail message="Failures reported in unit tests." unless="${int::parse(testresult.opensim.data.mysql.tests)==0}" /> 
 
+  <delete dir="%temp%"/>
+
 </target>
 
 <target name="test-cov" depends="build">