diff --git a/src/types/float.js b/src/types/float.js
index b0cffb7..dec6bbe 100644
--- a/src/types/float.js
+++ b/src/types/float.js
@@ -3,20 +3,17 @@ import NumberType from './number';
 const { abs } = Math;
 
 class FloatType extends NumberType {
-  constructor(min, max, precision) {
-    super(min, max);
+  constructor({ min, max, precision = -1 } = {}) {
+    super({ min, max });
 
     this.validators.push((val) => {
       if (precision < 0) {
         return true;
       }
 
-      const afterDot = String(abs(val)).split('.')[1];
+      const afterDot = String(abs(val)).split('.')[1].length;
 
-      return !!(
-        (afterDot && afterDot.length >= precision) ||
-        (!afterDot && precision === 0)
-      );
+      return afterDot >= precision;
     });
   }
 }