diff --git a/core/src/global/config-controller.ts b/core/src/global/config-controller.ts
index d9a988e6ced..01b25c52c05 100644
--- a/core/src/global/config-controller.ts
+++ b/core/src/global/config-controller.ts
@@ -44,9 +44,14 @@ export function createConfigController(configObj: any, platforms: PlatformConfig
     return isNaN(val) ? (fallback !== undefined ? fallback : NaN) : val;
   }
 
+  function set(key: string, value: string) {
+    configObj[key] = value;
+  }
+
   return {
     get,
     getBoolean,
-    getNumber
+    getNumber,
+    set
   };
 }
diff --git a/core/src/index.d.ts b/core/src/index.d.ts
index 7d6ef92281e..cb2156d350e 100644
--- a/core/src/index.d.ts
+++ b/core/src/index.d.ts
@@ -114,6 +114,7 @@ export interface Config {
   get: (key: string, fallback?: any) => any;
   getBoolean: (key: string, fallback?: boolean) => boolean;
   getNumber: (key: string, fallback?: number) => number;
+  set: (key: string, value: any) => void;
 }
 
 export type CssClassMap = { [className: string]: boolean };