diff --git a/runprebuild.sh b/runprebuild.sh
index 5671b82db9..87ca4d56ee 100755
--- a/runprebuild.sh
+++ b/runprebuild.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
 
 mono bin/Prebuild.exe /target nant
+# needed until we break up OpenSim.exe
+perl -pi -e 's{OpenSim.dll}{OpenSim.exe}' OpenSim/ApplicationPlugins/LoadRegions/OpenSim.ApplicationPlugins.LoadRegions.dll.build
 mono bin/Prebuild.exe /target vs2005