diff --git a/scripts/checks.m4 b/scripts/checks.m4
index 64eec64e..003f0d88 100644
--- a/scripts/checks.m4
+++ b/scripts/checks.m4
@@ -284,7 +284,7 @@ AC_DEFUN([TORRENT_WITH_LUA], [
       AX_LUA_LIBS
       AX_LUA_HEADERS
       AC_DEFINE(HAVE_LUA, 1, Use LUA.)
-      AC_DEFINE_UNQUOTED(LUA_DATADIR, ["${prefix}/share/rtorrent/lua"], Use LUA.)
+      AC_DEFINE(LUA_DATADIR, [PACKAGE_DATADIR "/lua"], [LUA data directory])
       LIBS="$LIBS $LUA_LIB"
       CXXFLAGS="$CXXFLAGS $LUA_INCLUDE"
     fi
diff --git a/src/rpc/lua.h b/src/rpc/lua.h
index f171f751..584dc38d 100644
--- a/src/rpc/lua.h
+++ b/src/rpc/lua.h
@@ -6,7 +6,6 @@
 
 #ifdef HAVE_LUA
 #include <lua.hpp>
-#define LUA_DATADIR PACKAGE_DATADIR "/lua"
 #endif
 
 namespace rpc {