diff --git a/jest.config.js b/jest.config.js
index 020f357..e9fdd50 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -7,7 +7,6 @@ module.exports = {
   testPathIgnorePatterns: ['/lib/', '/node_modules/'],
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
   setupFilesAfterEnv: ['./jest.setup.js'],
-  collectCoverage: true,
   testEnvironment: 'node',
   globals: {
     'ts-jest': {
diff --git a/package.json b/package.json
index 2c23a12..7570620 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "flagger",
-  "version": "3.0.11",
+  "version": "3.0.12",
   "description": "An open source JavaScript SDK for feature flagging (feature gating, feature toggles) for Node.js and Javascript applications",
   "main": "dist/index.cjs.js",
   "module": "dist/index.es.js",
@@ -15,7 +15,7 @@
     "build": "tsc && yarn rollup -c && rimraf temp",
     "lint": "tslint -p tsconfig.json -c tslint.json",
     "lint:fix": "tslint -p tsconfig.json -c tslint.json --fix",
-    "test": "jest"
+    "test": "jest --collectCoverage"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^11.0.2",
diff --git a/src/Flagger.ts b/src/Flagger.ts
index e8a2b29..f3c1316 100644
--- a/src/Flagger.ts
+++ b/src/Flagger.ts
@@ -11,7 +11,7 @@ import {
 } from './constants'
 import {Core} from './Core'
 import Ingester from './ingester/Ingester'
-import {Logger, LogLevel} from './Logger/Logger'
+import {Logger, LogLevel, LogLevelStrings} from './Logger/Logger'
 import SSE from './sse'
 import {
   escapeEntity,
@@ -92,7 +92,7 @@ export class FlaggerClass {
     backupSourceURL?: string
     sseURL?: string
     ingestionURL?: string
-    logLevel?: LogLevel
+    logLevel?: LogLevelStrings | LogLevel
     sdkInfo?: ISDKInfo
   }) {
     if (!apiKey) {
@@ -101,7 +101,11 @@ export class FlaggerClass {
     }
 
     if (logLevel) {
-      Logger.LOG_LEVEL = logLevel
+      if (typeof logLevel === 'string') {
+        Logger.LOG_LEVEL = Logger.parseLevel(logLevel)
+      } else {
+        Logger.LOG_LEVEL = logLevel
+      }
     }
 
     await this.shutdown()
diff --git a/src/Logger/Logger.test.ts b/src/Logger/Logger.test.ts
index d5d6984..eedc257 100644
--- a/src/Logger/Logger.test.ts
+++ b/src/Logger/Logger.test.ts
@@ -2,21 +2,21 @@ import {Logger, LogLevel} from './Logger'
 
 describe('Logger tests', () => {
   it('parseLevel test', () => {
-    expect(Logger.parseLevel('test')).toBe(LogLevel.ERROR)
+    expect(Logger.parseLevel('test')).toBe(LogLevel.error)
 
-    expect(Logger.parseLevel('warn')).toBe(LogLevel.WARN)
-    expect(Logger.parseLevel('WaRn')).toBe(LogLevel.WARN)
-    expect(Logger.parseLevel('WARNING')).toBe(LogLevel.WARN)
-    expect(Logger.parseLevel('warning')).toBe(LogLevel.WARN)
+    expect(Logger.parseLevel('warn')).toBe(LogLevel.warn)
+    expect(Logger.parseLevel('WaRn')).toBe(LogLevel.warn)
+    expect(Logger.parseLevel('WARNING')).toBe(LogLevel.warn)
+    expect(Logger.parseLevel('warning')).toBe(LogLevel.warn)
 
-    expect(Logger.parseLevel('debug')).toBe(LogLevel.DEBUG)
-    expect(Logger.parseLevel('DEBUG')).toBe(LogLevel.DEBUG)
-    expect(Logger.parseLevel('deb')).toBe(LogLevel.DEBUG)
-    expect(Logger.parseLevel('DeB')).toBe(LogLevel.DEBUG)
+    expect(Logger.parseLevel('debug')).toBe(LogLevel.debug)
+    expect(Logger.parseLevel('DEBUG')).toBe(LogLevel.debug)
+    expect(Logger.parseLevel('deb')).toBe(LogLevel.debug)
+    expect(Logger.parseLevel('DeB')).toBe(LogLevel.debug)
 
-    expect(Logger.parseLevel('err')).toBe(LogLevel.ERROR)
-    expect(Logger.parseLevel('ERR')).toBe(LogLevel.ERROR)
-    expect(Logger.parseLevel('ERRoR')).toBe(LogLevel.ERROR)
-    expect(Logger.parseLevel('error')).toBe(LogLevel.ERROR)
+    expect(Logger.parseLevel('err')).toBe(LogLevel.error)
+    expect(Logger.parseLevel('ERR')).toBe(LogLevel.error)
+    expect(Logger.parseLevel('ERRoR')).toBe(LogLevel.error)
+    expect(Logger.parseLevel('error')).toBe(LogLevel.error)
   })
 })
diff --git a/src/Logger/Logger.ts b/src/Logger/Logger.ts
index c027eb5..eb75143 100755
--- a/src/Logger/Logger.ts
+++ b/src/Logger/Logger.ts
@@ -8,10 +8,16 @@ export interface ILogger {
   error(msg: string): void
 }
 
+// 'warn' | 'warning' | 'deb' | 'debug' | 'err' | 'error'
+export type LogLevelStrings = keyof typeof LogLevel
+
 export enum LogLevel {
-  ERROR,
-  WARN,
-  DEBUG
+  error,
+  err,
+  warning,
+  warn,
+  debug,
+  deb
 }
 
 /**
@@ -19,7 +25,7 @@ export enum LogLevel {
  * @class Logger
  */
 export class Logger implements ILogger {
-  public static LOG_LEVEL: LogLevel = LogLevel.ERROR
+  public static LOG_LEVEL: LogLevel = LogLevel.error
 
   /**
    * Parse level and return it. By default returns ERROR level
@@ -27,17 +33,17 @@ export class Logger implements ILogger {
    */
   public static parseLevel(level: string): LogLevel {
     if (level.toLowerCase() === 'warn' || level.toLowerCase() === 'warning') {
-      return LogLevel.WARN
+      return LogLevel.warn
     }
     if (level.toLowerCase() === 'debug' || level.toLowerCase() === 'deb') {
-      return LogLevel.DEBUG
+      return LogLevel.debug
     }
 
     if (level.toLowerCase() === 'err' || level.toLowerCase() === 'error') {
-      return LogLevel.ERROR
+      return LogLevel.error
     }
 
-    return LogLevel.ERROR
+    return LogLevel.error
   }
   public name: string
 
@@ -84,14 +90,16 @@ export class Logger implements ILogger {
     }
 
     let log = console.log.bind(console)
-    if (type === LogLevel.ERROR && console.error) {
+    if (type === LogLevel.error && console.error) {
       log = console.error.bind(console)
     }
-    if (type === LogLevel.WARN && console.warn) {
+    if (type === LogLevel.warn && console.warn) {
       log = console.warn.bind(console)
     }
 
-    const prefix = `[${type}] ${this._ts()} ${this.name}`
+    const prefix = `[${LogLevel[type].toUpperCase()}] ${this._ts()} ${
+      this.name
+    }`
 
     if (msg.length === 1 && typeof msg[0] === 'string') {
       log(`${prefix} - ${msg[0]}`)
@@ -115,7 +123,7 @@ export class Logger implements ILogger {
    * @param {string|object} msg - Logging message or object
    */
   public warn(...msg: any[]) {
-    this._log(LogLevel.WARN, ...msg)
+    this._log(LogLevel.warn, ...msg)
   }
 
   /**
@@ -125,7 +133,7 @@ export class Logger implements ILogger {
    * @param {string|object} msg - Logging message or object
    */
   public error(...msg: any[]) {
-    this._log(LogLevel.ERROR, ...msg)
+    this._log(LogLevel.error, ...msg)
   }
 
   /**
@@ -135,6 +143,6 @@ export class Logger implements ILogger {
    * @param {string|object} msg - Logging message or object
    */
   public debug(...msg: any[]) {
-    this._log(LogLevel.DEBUG, ...msg)
+    this._log(LogLevel.debug, ...msg)
   }
 }