diff --git a/debian/dh-lua.conf b/debian/dh-lua.conf
index 23ad8b0..aaccd45 100644
--- a/debian/dh-lua.conf
+++ b/debian/dh-lua.conf
@@ -3,6 +3,6 @@ PKG_NAME=lemock
 
 LUA_HEADER=
 LUA_SOURCES=build/lemock.lua
-LUA_SOURCES_MANGLER=
+LUA_SOURCES_MANGLER=sed 's?^build/??'
 LUA_MODNAME=lemock
 LUA_TEST=