diff --git a/src/ai/ai_scanner.cpp b/src/ai/ai_scanner.cpp
index 281b8925d3..1c7b089470 100644
--- a/src/ai/ai_scanner.cpp
+++ b/src/ai/ai_scanner.cpp
@@ -32,7 +32,7 @@ void AIScannerInfo::Initialize()
 {
 	ScriptScanner::Initialize("AIScanner");
 
-	ScriptAllocatorScope alloc_scope(this->engine);
+	ScriptAllocatorScope alloc_scope(this->engine.get());
 
 	/* Create the dummy AI */
 	this->main_script = "%_dummy";
diff --git a/src/script/script_scanner.cpp b/src/script/script_scanner.cpp
index 0aea257240..102ce454d4 100644
--- a/src/script/script_scanner.cpp
+++ b/src/script/script_scanner.cpp
@@ -44,10 +44,7 @@ bool ScriptScanner::AddFile(const std::string &filename, size_t, const std::stri
 	return true;
 }
 
-ScriptScanner::ScriptScanner() :
-	engine(nullptr)
-{
-}
+ScriptScanner::ScriptScanner() = default;
 
 void ScriptScanner::ResetEngine()
 {
@@ -58,7 +55,7 @@ void ScriptScanner::ResetEngine()
 
 void ScriptScanner::Initialize(std::string_view name)
 {
-	this->engine = new Squirrel(name);
+	this->engine = std::make_unique<Squirrel>(name);
 
 	this->RescanDir();
 
@@ -68,8 +65,6 @@ void ScriptScanner::Initialize(std::string_view name)
 ScriptScanner::~ScriptScanner()
 {
 	this->Reset();
-
-	delete this->engine;
 }
 
 void ScriptScanner::RescanDir()
diff --git a/src/script/script_scanner.hpp b/src/script/script_scanner.hpp
index e05da0b2ba..e70ffe7b0b 100644
--- a/src/script/script_scanner.hpp
+++ b/src/script/script_scanner.hpp
@@ -26,7 +26,7 @@ public:
 	/**
 	 * Get the engine of the main squirrel handler (it indexes all available scripts).
 	 */
-	class Squirrel *GetEngine() { return this->engine; }
+	class Squirrel *GetEngine() { return this->engine.get(); }
 
 	/**
 	 * Get the current main script the ScanDir is currently tracking.
@@ -84,7 +84,7 @@ public:
 	void RescanDir();
 
 protected:
-	class Squirrel *engine;  ///< The engine we're scanning with.
+	std::unique_ptr<class Squirrel> engine; ///< The engine we're scanning with.
 	std::string main_script; ///< The full path of the script.
 	std::string tar_file;    ///< If, which tar file the script was in.