diff --git a/src/LazyList.js b/src/LazyList.js
index 1b0cc44..c9c003d 100644
--- a/src/LazyList.js
+++ b/src/LazyList.js
@@ -56,6 +56,7 @@ export default class LazyList {
     const { list, operations } = this;
     const listLength = list.length;
     const operationsLength = operations.length;
+    const { type: lastOperationType } = operations[operationsLength - 1];
     const result = [];
     let reducerAcc;
 
@@ -90,12 +91,12 @@ export default class LazyList {
         }
       }
 
-      if (nextItem.valid) {
+      if (lastOperationType !== LIST_OPERATIONS.REDUCE && nextItem.valid) {
         result.push(nextItem.value);
       }
     }
 
-    if (reducerAcc) {
+    if (lastOperationType === LIST_OPERATIONS.REDUCE) {
       return reducerAcc;
     }
 
diff --git a/src/LazyList.test.js b/src/LazyList.test.js
index 7ab64ee..f48f4cc 100644
--- a/src/LazyList.test.js
+++ b/src/LazyList.test.js
@@ -86,6 +86,7 @@ describe('LazyList.map', () => {
 describe('LazyList.filter', () => {
   it('should filter value correctly', () => {
     expect(lazy([0, 1, 2]).filter(v => v > 0).value()).toEqual([1, 2]);
+    expect(lazy([0, true, false]).filter(v => !!v).value()).toEqual([true]);
     expect(lazy([
       { name: 'Joe', age: 3 },
       { name: 'Spike', age: 16 },
@@ -103,6 +104,7 @@ describe('LazyList.filter', () => {
 describe('LazyList.reduce', () => {
   it('should reduce to correctly value', () => {
     expect(lazy([1, 2, 3]).reduce((a, b) => a + b)).toEqual(6);
+    expect(lazy([0, 0]).reduce((a, b) => a + b)).toEqual(0);
   });
 
   it('should reduce to correctly value when provide initial value', () => {