diff --git a/samcli/commands/init/__init__.py b/samcli/commands/init/__init__.py
index 23c4537fb9..798e341366 100644
--- a/samcli/commands/init/__init__.py
+++ b/samcli/commands/init/__init__.py
@@ -90,7 +90,7 @@
     help="Disable Cookiecutter prompting and accept default values defined template config",
 )
 @click.option(
-    "--extra_context",
+    "--extra-context",
     default=None,
     help="Override any custom parameters in the template's cookiecutter.json configuration e.g. "
     ""
diff --git a/tests/integration/init/test_init_command.py b/tests/integration/init/test_init_command.py
index 9ba5418bc1..bad04e227f 100644
--- a/tests/integration/init/test_init_command.py
+++ b/tests/integration/init/test_init_command.py
@@ -116,7 +116,7 @@ def test_init_command_with_extra_context_parameter(self):
                     "--name",
                     "sam-app-maven",
                     "--no-interactive",
-                    "--extra_context",
+                    "--extra-context",
                     '{"schema_name": "codedeploy", "schema_type": "aws"}',
                     "-o",
                     temp,