diff --git a/src/core/ioc/base.ts b/src/core/ioc/base.ts
index 36ab71f0..459f61fe 100644
--- a/src/core/ioc/base.ts
+++ b/src/core/ioc/base.ts
@@ -71,7 +71,7 @@ async function composeRoot(
         __add_container('@sern/logger', new __Services.DefaultLogging());
     }
     __add_container('@sern/errors', new __Services.DefaultErrorHandling());
-    __add_container('@sern/cron', {})
+    __add_container('@sern/cron', new __Services.Cron())
     __add_container('@sern/modules', new Map())
     __add_container('@sern/emitter', new EventEmitter())
     //Build the container based on the callback provided by the user
@@ -98,7 +98,7 @@ export async function makeDependencies (conf: ValidDependencyConfig) {
             __add_container('@sern/logger', new __Services.DefaultLogging);
         }
         __add_container('@sern/errors', new __Services.DefaultErrorHandling());
-        __add_container('@sern/cron', {})
+        __add_container('@sern/cron', new __Services.Cron())
         __add_container('@sern/modules', new Map())
         __add_container('@sern/emitter', new EventEmitter())
         await useContainerRaw().ready();
diff --git a/src/core/structures/default-services.ts b/src/core/structures/default-services.ts
index 75001ee2..be2d3df1 100644
--- a/src/core/structures/default-services.ts
+++ b/src/core/structures/default-services.ts
@@ -52,14 +52,17 @@ export class Cron extends EventEmitter {
     modules: Map<string, CronEventCommand> = new Map();
     private sanityCheck(eventName: string | symbol) : asserts eventName is string {
         if(typeof eventName === 'symbol') throw Error("Cron cannot add symbol based listener")
-        if(!cron.validate(eventName)) {
-            throw Error("Invalid cron expression while adding")
-        }
+        
     }
     addCronModule(module: Module) {
         if(module.type !== EventType.Cron) {
             throw Error("Can only add cron modules");
         }
+
+        //@ts-ignore
+        if(!cron.validate(module.pattern)) {
+            throw Error("Invalid cron expression while adding")
+        }
         this.modules.set(module.name!, module as CronEventCommand); 
     }
     addListener(eventName: string | symbol, listener: AnyFunction): this {
diff --git a/src/handlers/event-utils.ts b/src/handlers/event-utils.ts
index dc52eb90..103a62a3 100644
--- a/src/handlers/event-utils.ts
+++ b/src/handlers/event-utils.ts
@@ -55,7 +55,7 @@ const createResult = createResultResolver<
  * @param module
  * @param source
  */
-export function eventDispatcher(module: Module,  source: unknown) {
+export function eventDispatcher(module: Module, source: unknown) {
     assert.ok(source instanceof EventEmitter, `${source} is not an EventEmitter`);
 
     const execute: OperatorFunction<unknown[], unknown> =
diff --git a/src/handlers/user-defined-events.ts b/src/handlers/user-defined-events.ts
index 572b0d17..35b382cc 100644
--- a/src/handlers/user-defined-events.ts
+++ b/src/handlers/user-defined-events.ts
@@ -15,9 +15,12 @@ const intoDispatcher = (deps: UnpackedDependencies) =>
                 return eventDispatcher(module,  deps['@sern/client']);
             case EventType.External:
                 return eventDispatcher(module,  deps[module.emitter]);
-            case EventType.Cron:
-                //@ts-ignore TODO
-                return eventDispatcher(module, deps['@sern/cron'])
+            case EventType.Cron: {
+                //@ts-ignore
+                const cron = deps['@sern/cron'];
+                cron.addCronModule(module);
+                return eventDispatcher(module, cron)
+            }
             default:
                 throw Error(SernError.InvalidModuleType + ' while creating event handler');
         }
diff --git a/src/types/core-modules.ts b/src/types/core-modules.ts
index bbb82e1e..58684ac1 100644
--- a/src/types/core-modules.ts
+++ b/src/types/core-modules.ts
@@ -50,9 +50,9 @@ export interface ExternalEventCommand extends Module {
     execute(...args: unknown[]): Awaitable<unknown>;
 }
 export interface CronEventCommand extends Module { 
+    type: EventType.Cron;
     name?: string;
     pattern: string;
-    type: EventType.Cron;
     execute(...args: unknown[]): Awaitable<unknown>;
 }
 
@@ -168,8 +168,7 @@ export interface EventModuleDefs {
     [EventType.Sern]: SernEventCommand;
     [EventType.Discord]: DiscordEventCommand;
     [EventType.External]: ExternalEventCommand;
-    //TODO
-    [EventType.Cron]: ExternalEventCommand;
+    [EventType.Cron]: CronEventCommand;
 }
 
 export interface SernAutocompleteData