diff --git a/package.json b/package.json
index 1d04778..a42dfa0 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,13 @@
 					],
 					"default": "off",
 					"description": "Traces the communication between VS Code and the language server."
+				},
+				"angelscript-languageserver.defines": {
+					"scope": "window",
+					"type": "array",
+					"items": {
+						"type": "string"
+					}
 				}
 			}
 		},
diff --git a/server/src/server.ts b/server/src/server.ts
index b2869bd..0a6397b 100644
--- a/server/src/server.ts
+++ b/server/src/server.ts
@@ -108,6 +108,14 @@ connection.onInitialized(() => {
         });
     }
 
+    connection.workspace.getConfiguration('angelscript-languageserver.defines').then((config) => {
+        let defines = config as string[];
+        for (let index = 0; index < defines.length; index++) {
+            const define = defines[index];
+            database.addDefine(define);
+        }    
+    });
+
     connection.workspace.getWorkspaceFolders().then((ws) => {
         ws?.forEach(element => {
             registerFiles(element.uri.substr(7))
diff --git a/server/src/src/Database.cpp b/server/src/src/Database.cpp
index a91985c..a42cbd2 100644
--- a/server/src/src/Database.cpp
+++ b/server/src/src/Database.cpp
@@ -11,6 +11,7 @@ Napi::Object Database::Init(Napi::Env env, Napi::Object exports) {
                     {InstanceMethod("reset", &Database::Reset), InstanceMethod("loadTypeDef", &Database::LoadTypeDef),
                      InstanceMethod("loadScript", &Database::LoadScript), InstanceMethod("build", &Database::Build),
                      InstanceMethod("messages", &Database::GetMessages),
+                     InstanceMethod("addDefine", &Database::AddDefine),
                      InstanceMethod("setEngineProperty", &Database::SetEngineProperty)});
 
     auto* constructor = new Napi::FunctionReference();
@@ -37,6 +38,9 @@ void Database::SetupEngine() {
     _engine->SetEngineProperty(asEP_REQUIRE_ENUM_SCOPE, true);
     _engine->SetEngineProperty(asEP_PROPERTY_ACCESSOR_MODE, 2);
     _engine->SetEngineProperty(asEP_COMPILER_WARNINGS, 2);
+    for (auto& flag : _defines) {
+        _builder.DefineWord(flag.c_str());
+    }
     RegisterStdString(_engine);
     RegisterScriptArray(_engine, true);
     _builder.StartNewModule(_engine, "Module");
@@ -103,4 +107,11 @@ Napi::Value Database::GetMessages(const Napi::CallbackInfo& info) {
 
     return messages;
 }
+
+void Database::AddDefine(const Napi::CallbackInfo& info) {
+    if (info.Length() < 1)
+        throw std::logic_error("Not enough arguments");
+    auto name = info[0].As<Napi::String>().Utf8Value();
+    _defines.emplace_back(name);
+}
 #endif
\ No newline at end of file
diff --git a/server/src/src/Database.hpp b/server/src/src/Database.hpp
index 8841737..2095813 100644
--- a/server/src/src/Database.hpp
+++ b/server/src/src/Database.hpp
@@ -12,6 +12,7 @@ private:
     asIScriptEngine* _engine = nullptr;
     CScriptBuilder _builder;
     ASTypeDefParser::TypeDefResult _result;
+    std::vector<std::string> _defines;
     std::vector<const Diagnostic*> _messages;
     std::mutex _lock;
 
@@ -22,6 +23,7 @@ public:
     static Napi::Object Init(Napi::Env env, Napi::Object exports);
     explicit Database(const Napi::CallbackInfo& info);
 
+    void AddDefine(const Napi::CallbackInfo& info);
     void SetEngineProperty(const Napi::CallbackInfo& info);
     void Reset(const Napi::CallbackInfo& info);
     void LoadScript(const Napi::CallbackInfo& info);
diff --git a/server/src/wrapper.ts b/server/src/wrapper.ts
index e4f079a..36d12aa 100644
--- a/server/src/wrapper.ts
+++ b/server/src/wrapper.ts
@@ -55,6 +55,7 @@ export interface ScriptDatabase {
     loadScript(name: string, script: string): void;
     build(): number;
     messages(): Message[];
+    addDefine(define: string) : void;
 }
 
 export function BuildDatabase(): ScriptDatabase {