diff --git a/runprebuild.sh b/runprebuild.sh
index b3b5c9d1d3..98bfcb349a 100755
--- a/runprebuild.sh
+++ b/runprebuild.sh
@@ -1,4 +1,18 @@
 #!/bin/sh
 
-mono bin/Prebuild.exe /target nant
-mono bin/Prebuild.exe /target vs2008
+case "$1" in
+
+  'clean')
+
+    mono bin/Prebuild.exe /clean
+
+  ;;
+
+  *)
+
+    mono bin/Prebuild.exe /target nant
+    mono bin/Prebuild.exe /target vs2008
+  ;;
+
+esac
+