diff --git a/src/index.js b/src/index.js
index d55517b..0c8b71e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -97,6 +97,7 @@ VERBS.concat('any').forEach(function(method) {
         reply(function(config) {
           var error = new Error('Network Error');
           error.config = config;
+          error.isAxiosError = true;
           return Promise.reject(error);
         });
       },
@@ -105,6 +106,7 @@ VERBS.concat('any').forEach(function(method) {
         replyOnce(function(config) {
           var error = new Error('Network Error');
           error.config = config;
+          error.isAxiosError = true;
           return Promise.reject(error);
         });
       },
@@ -114,6 +116,7 @@ VERBS.concat('any').forEach(function(method) {
           var error = new Error('timeout of ' + config.timeout + 'ms exceeded');
           error.config = config;
           error.code = 'ECONNABORTED';
+          error.isAxiosError = true;
           return Promise.reject(error);
         });
       },
@@ -123,6 +126,7 @@ VERBS.concat('any').forEach(function(method) {
           var error = new Error('timeout of ' + config.timeout + 'ms exceeded');
           error.config = config;
           error.code = 'ECONNABORTED';
+          error.isAxiosError = true;
           return Promise.reject(error);
         });
       }
diff --git a/src/utils.js b/src/utils.js
index 5420cc1..3f3c92c 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -117,6 +117,7 @@ function createErrorResponse(message, config, response) {
   var error = new Error(message);
   error.config = config;
   error.response = response;
+  error.isAxiosError = true;
   return error;
 }
 
diff --git a/test/basics.spec.js b/test/basics.spec.js
index d1d6dfa..191e808 100644
--- a/test/basics.spec.js
+++ b/test/basics.spec.js
@@ -773,4 +773,17 @@ describe('MockAdapter basics', function() {
       expect(response.status).to.equal(201);
     });
   });
+
+  it('sets isAxiosInstance property on errors', function() {
+    mock.onGet('/').reply(404);
+
+    return instance
+      .get('/')
+      .then(function() {
+        expect(true).to.be.false;
+      })
+      .catch(function(error) {
+        expect(error.response.status).to.equal(404);
+      });
+  });
 });
diff --git a/test/network_error.spec.js b/test/network_error.spec.js
index c0465e7..6dfe914 100644
--- a/test/network_error.spec.js
+++ b/test/network_error.spec.js
@@ -23,6 +23,7 @@ describe('networkError spec', function() {
         expect(error.config).to.exist;
         expect(error.response).to.not.exist;
         expect(error.message).to.equal('Network Error');
+        expect(error.isAxiosError).to.be.true;
       }
     );
   });
diff --git a/test/timeout.spec.js b/test/timeout.spec.js
index 3496e8c..217c121 100644
--- a/test/timeout.spec.js
+++ b/test/timeout.spec.js
@@ -25,6 +25,7 @@ describe('timeout spec', function() {
         expect(error.config).to.exist;
         expect(error.code).to.equal('ECONNABORTED');
         expect(error.message).to.equal('timeout of 0ms exceeded');
+        expect(error.isAxiosError).to.be.true;
       }
     );
   });