diff --git a/README.md b/README.md
index 491d835..c9aa3fe 100644
--- a/README.md
+++ b/README.md
@@ -500,11 +500,11 @@ written by OwnTracks Recorder version 0.3.0
 It is 14:10:01 in the year 2015 owntracks/jane/phone lat=48.858339 Avenue Anatole France, 75007 Paris, France
 ```
 
-### `putrec`
+### `otr_putrec`
 
-An optional function you provide is called `putrec(u, d, s)`. If it exists,
+An optional function you provide is called `otr_putrec(u, d, s)`. If it exists,
 it is called with the current user in `u`, the device in `d` and the payload
-(which is possibly not JSON) in the string `s`. If your function returns a
+(which for OwnTracks apps is JSON but for, eg Greenwich devices might not be) in the string `s`. If your function returns a
 non-zero value, the _recorder_ will *not* write the REC file for this publish.
 
 ### Hooklets
diff --git a/hooks.c b/hooks.c
index e6dd90d..2d8f9ca 100644
--- a/hooks.c
+++ b/hooks.c
@@ -199,7 +199,7 @@ int hooks_norec(struct udata *ud, char *user, char *device, char *payload)
 		return (0);
 
 	lua_settop(ld->L, 0);
-	lua_getglobal(ld->L, "putrec");
+	lua_getglobal(ld->L, "otr_putrec");
 	if (lua_type(ld->L, -1) != LUA_TFUNCTION) {
 		return (0);
 	}
@@ -208,14 +208,13 @@ int hooks_norec(struct udata *ud, char *user, char *device, char *payload)
 	lua_pushstring(ld->L, device);
 	lua_pushstring(ld->L, payload);
 
-	/* Invoke `hook' function in Lua with our args */
+	/* Invoke Lua function with our args */
 	if (lua_pcall(ld->L, 3, 1, 0)) {
 		olog(LOG_ERR, "Failed to run putrec in Lua: %s", lua_tostring(ld->L, -1));
 		exit(1);
 	}
 
 	rc = (int)lua_tonumber(ld->L, -1);
-	printf("C: hooks_norec returns %d\n", rc);
 	return (rc);
 }
 
diff --git a/ot-recorder.c b/ot-recorder.c
index bbabdb6..0a1edb1 100644
--- a/ot-recorder.c
+++ b/ot-recorder.c
@@ -268,8 +268,13 @@ JsonNode *csv_to_json(char *payload)
 static void putrec(struct udata *ud, time_t now, UT_string *reltopic, UT_string *username, UT_string *device, char *string)
 {
 	FILE *fp;
+	int rc = 0;
 
-	if (hooks_norec(ud, UB(username), UB(device), string) == 0) {
+#ifdef WITH_LUA
+	rc = hooks_norec(ud, UB(username), UB(device), string);
+#endif
+
+	if (rc == 0) {
 		if ((fp = pathn("a", "rec", username, device, "rec")) == NULL) {
 			olog(LOG_ERR, "Cannot write REC for %s/%s: %m",
 				UB(username), UB(device));