diff --git a/google/auth/impersonated_credentials.py b/google/auth/impersonated_credentials.py
index d2c5ded..d96c05b 100644
--- a/google/auth/impersonated_credentials.py
+++ b/google/auth/impersonated_credentials.py
@@ -148,7 +148,7 @@
     Initialize a source credential which does not have access to
     list bucket::
 
-        from google.oauth2 import service_acccount
+        from google.oauth2 import service_account
 
         target_scopes = [
             'https://www.googleapis.com/auth/devstorage.read_only']