diff --git a/dist/index.d.ts b/dist/index.d.ts
index a5a8c1f..3fdece9 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -2,5 +2,5 @@ export declare class Qenv {
     requiredEnvVars: string[];
     availableEnvVars: string[];
     missingEnvVars: string[];
-    constructor(basePathArg: string, envYmlPathArg: any);
+    constructor(basePathArg: string, envYmlPathArg: any, failOnMissing?: boolean);
 }
diff --git a/dist/index.js b/dist/index.js
index b3a7c25..96aaebd 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1,13 +1,20 @@
 "use strict";
 var plugins = require("./qenv.plugins");
 var Qenv = (function () {
-    function Qenv(basePathArg, envYmlPathArg) {
+    function Qenv(basePathArg, envYmlPathArg, failOnMissing) {
         if (basePathArg === void 0) { basePathArg = process.cwd(); }
+        if (failOnMissing === void 0) { failOnMissing = true; }
         this.requiredEnvVars = getRequiredEnvVars(basePathArg);
         this.availableEnvVars = getAvailableEnvVars(this.requiredEnvVars, envYmlPathArg);
         this.missingEnvVars = getMissingEnvVars(this.requiredEnvVars, this.availableEnvVars);
-        for (var keyArg in this.missingEnvVars) {
-            plugins.beautylog.warn(this.missingEnvVars[keyArg] + " is required, but missing!");
+        //handle missing variables
+        if (this.missingEnvVars.length > 0) {
+            plugins.beautylog.error("Some Env variables could not be resolved:");
+            console.log(this.missingEnvVars);
+            if (failOnMissing) {
+                plugins.beautylog.error("Exiting!");
+                process.exit(1);
+            }
         }
     }
     return Qenv;
@@ -31,6 +38,7 @@ var getAvailableEnvVars = function (requiredEnvVarsArg, envYmlPathArg) {
         envYml = plugins.smartfile.local.toObjectSync(envYmlPathArg);
     }
     catch (err) {
+        plugins.beautylog.log("env file couldn't be found at " + envYmlPathArg);
         envYml = {};
     }
     for (var keyArg in requiredEnvVarsArg) {
@@ -49,4 +57,4 @@ var getMissingEnvVars = function (requiredEnvVarsArray, availableEnvVarsArray) {
     return plugins.lodash.difference(requiredEnvVarsArray, availableEnvVarsArray);
 };
 
-//# 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XJuIHJlc3VsdDtcbn1cblxubGV0IGdldE1pc3NpbmdFbnZWYXJzID0gKHJlcXVpcmVkRW52VmFyc0FycmF5OnN0cmluZ1tdLGF2YWlsYWJsZUVudlZhcnNBcnJheTpzdHJpbmdbXSkgPT4ge1xuICAgIHJldHVybiBwbHVnaW5zLmxvZGFzaC5kaWZmZXJlbmNlKHJlcXVpcmVkRW52VmFyc0FycmF5LGF2YWlsYWJsZUVudlZhcnNBcnJheSk7XG59Il19
+//# sourceMappingURL=data:application/json;charset=utf8;base64,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
diff --git a/test/test.js b/test/test.js
index 02cbe1b..9b85beb 100644
--- a/test/test.js
+++ b/test/test.js
@@ -10,7 +10,7 @@ process.env["key1"] = "original";
 var qenvTestObject;
 describe("Qenv class", function () {
     it("should create a new class", function () {
-        qenvTestObject = new index_1.Qenv(process.cwd(), process.cwd());
+        qenvTestObject = new index_1.Qenv(process.cwd(), process.cwd(), false);
     });
     it("key1 should be not be overwritten since it is already present", function () {
         process.env.key1.should.equal("original");
@@ -20,4 +20,4 @@ describe("Qenv class", function () {
     });
 });
 
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+//# sourceMappingURL=data:application/json;charset=utf8;base64,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
diff --git a/test/test.ts b/test/test.ts
index dd2668f..3cc0d0a 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -12,7 +12,7 @@ process.env["key1"] = "original"
 let qenvTestObject:Qenv;
 describe("Qenv class",function(){
     it("should create a new class",function(){
-        qenvTestObject = new Qenv(process.cwd(),process.cwd());
+        qenvTestObject = new Qenv(process.cwd(),process.cwd(),false);
     });
     it("key1 should be not be overwritten since it is already present",function(){
         process.env.key1.should.equal("original");
diff --git a/ts/index.ts b/ts/index.ts
index b00b519..583ca2f 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -4,12 +4,19 @@ export class Qenv {
     requiredEnvVars:string[];
     availableEnvVars:string[];
     missingEnvVars:string[];
-    constructor(basePathArg = process.cwd(),envYmlPathArg){
+    constructor(basePathArg = process.cwd(),envYmlPathArg,failOnMissing = true){
         this.requiredEnvVars = getRequiredEnvVars(basePathArg);
         this.availableEnvVars = getAvailableEnvVars(this.requiredEnvVars,envYmlPathArg);
         this.missingEnvVars = getMissingEnvVars(this.requiredEnvVars,this.availableEnvVars);
-        for(let keyArg in this.missingEnvVars){
-            plugins.beautylog.warn(this.missingEnvVars[keyArg] + " is required, but missing!")
+        
+        //handle missing variables
+        if (this.missingEnvVars.length > 0){
+            plugins.beautylog.error("Some Env variables could not be resolved:")
+            console.log(this.missingEnvVars);
+            if(failOnMissing){
+                plugins.beautylog.error("Exiting!")
+                process.exit(1);
+            }
         }
     }
 };
@@ -32,6 +39,7 @@ let getAvailableEnvVars = (requiredEnvVarsArg:string[],envYmlPathArg:string):str
         envYml = plugins.smartfile.local.toObjectSync(envYmlPathArg);
     }
     catch(err){
+        plugins.beautylog.log("env file couldn't be found at " + envYmlPathArg)
         envYml = {};
     }
     for(let keyArg in requiredEnvVarsArg){