diff --git a/src/console.c b/src/console.c
index ac4dce6..2df3be9 100644
--- a/src/console.c
+++ b/src/console.c
@@ -2239,7 +2239,17 @@ static void onConsoleEvalCommand(Console* console, const char* param)
 	printLine(console);
 
 	const tic_script_config* script_config = console->tic->api.get_script_config(console->tic);
-	script_config->eval(console->tic, param);
+
+	if (script_config->eval)
+	{
+		if(param)
+			script_config->eval(console->tic, param);
+		else printError(console, "nothing to eval");
+	}
+	else
+	{
+		printError(console, "'eval' not implemented for the script");
+	}
 
 	commandDone(console);
 }
diff --git a/src/luaapi.c b/src/luaapi.c
index 0a49020..8327cfd 100644
--- a/src/luaapi.c
+++ b/src/luaapi.c
@@ -1414,10 +1414,12 @@ static const tic_outline_item* getLuaOutline(const char* code, s32* size)
 	return items;
 }
 
-void evalLua(tic_mem* tic, const char* code) {
+static void evalLua(tic_mem* tic, const char* code) {
 	tic_machine* machine = (tic_machine*)tic;
 	lua_State* lua = machine->lua;
 
+	if (!lua) return;
+
 	lua_settop(lua, 0);
 
 	if(luaL_loadstring(lua, code) != LUA_OK || lua_pcall(lua, 0, LUA_MULTRET, 0) != LUA_OK)
@@ -1426,10 +1428,6 @@ void evalLua(tic_mem* tic, const char* code) {
 	}
 }
 
-void evalPlaceholder(tic_mem* tic, const char* code) {
-	printf("TODO: not yet implemented\n.");
-}
-
 static const tic_script_config LuaSyntaxConfig = 
 {
 	.init 				= initLua,
@@ -1609,7 +1607,7 @@ static const tic_script_config MoonSyntaxConfig =
 
 	.getOutline			= getMoonOutline,
 	.parse 				= parseCode,
-	.eval				= evalPlaceholder,
+	.eval				= NULL,
 
 	.blockCommentStart 	= NULL,
 	.blockCommentEnd 	= NULL,
@@ -1750,7 +1748,7 @@ static const tic_outline_item* getFennelOutline(const char* code, s32* size)
 	return items;
 }
 
-void evalFennel(tic_mem* tic, const char* code) {
+static void evalFennel(tic_mem* tic, const char* code) {
 	tic_machine* machine = (tic_machine*)tic;
 	lua_State* fennel = machine->lua;
 
diff --git a/src/wrenapi.c b/src/wrenapi.c
index 99c9757..c6094b7 100644
--- a/src/wrenapi.c
+++ b/src/wrenapi.c
@@ -1372,7 +1372,7 @@ static const tic_outline_item* getWrenOutline(const char* code, s32* size)
 	return items;
 }
 
-void evalWren(tic_mem* memory, const char* code) 
+static void evalWren(tic_mem* memory, const char* code)
 {
 	tic_machine* machine = (tic_machine*)memory;
 	wrenInterpret(machine->wren, code);