diff --git a/src/ai/ai_instance.cpp b/src/ai/ai_instance.cpp
--- a/src/ai/ai_instance.cpp
+++ b/src/ai/ai_instance.cpp
@@ -81,7 +81,6 @@
 
 #include "../company_base.h"
 #include "../company_func.h"
-#include "../fileio_func.h"
 
 AIInstance::AIInstance() :
 	ScriptInstance("AI")
@@ -194,29 +193,7 @@ void AIInstance::RegisterAPI()
 	SQAIWaypointList_Register(this->engine);
 	SQAIWaypointList_Vehicle_Register(this->engine);
 
-	if (!this->LoadCompatibilityScripts(this->versionAPI)) this->Died();
-}
-
-bool AIInstance::LoadCompatibilityScripts(const char *api_version)
-{
-	char script_name[32];
-	seprintf(script_name, lastof(script_name), "compat_%s.nut", api_version);
-	char buf[MAX_PATH];
-	Searchpath sp;
-	FOR_ALL_SEARCHPATHS(sp) {
-		FioAppendDirectory(buf, MAX_PATH, sp, AI_DIR);
-		ttd_strlcat(buf, script_name, MAX_PATH);
-		if (!FileExists(buf)) continue;
-
-		if (this->engine->LoadScript(buf)) return true;
-
-		ScriptLog::Error("Failed to load API compatibility script");
-		DEBUG(script, 0, "Error compiling / running API compatibility script: %s", buf);
-		return false;
-	}
-
-	ScriptLog::Warning("API compatibility script not found");
-	return true;
+	if (!this->LoadCompatibilityScripts(this->versionAPI, AI_DIR)) this->Died();
 }
 
 void AIInstance::Died()