diff --git a/src/Util.ts b/src/Util.ts
index 94102d642..a9b4906ff 100644
--- a/src/Util.ts
+++ b/src/Util.ts
@@ -1,6 +1,6 @@
 import { Konva } from './Global';
 import { Context } from './Context';
-import { IRect, RGB, RGBA, Vector2d } from './types';
+import { IRect, RGB, Vector2d } from './types';
 
 /*
  * Last updated November 2011
diff --git a/src/filters/Enhance.ts b/src/filters/Enhance.ts
index 2bc749430..887afba83 100644
--- a/src/filters/Enhance.ts
+++ b/src/filters/Enhance.ts
@@ -2,7 +2,7 @@ import { Factory } from '../Factory';
 import { Node, Filter } from '../Node';
 import { getNumberValidator } from '../Validators';
 
-function remap(fromValue, fromMin, fromMax, toMin, toMax) {
+function remap(fromValue: number, fromMin: number, fromMax: number, toMin: number, toMax: number) {
   // Compute the range of the data
   var fromRange = fromMax - fromMin,
     toRange = toMax - toMin,