diff --git a/borgmatic/borg/environment.py b/borgmatic/borg/environment.py
index 490c07ab..4bdb33ed 100644
--- a/borgmatic/borg/environment.py
+++ b/borgmatic/borg/environment.py
@@ -15,6 +15,7 @@ OPTION_TO_ENVIRONMENT_VARIABLE = {
 DEFAULT_BOOL_OPTION_TO_ENVIRONMENT_VARIABLE = {
     'relocated_repo_access_is_ok': 'BORG_RELOCATED_REPO_ACCESS_IS_OK',
     'unknown_unencrypted_repo_access_is_ok': 'BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK',
+    'check_i_know_what_i_am_doing': 'BORG_CHECK_I_KNOW_WHAT_I_AM_DOING',
 }
 
 
@@ -35,4 +36,4 @@ def initialize(storage_config):
         environment_variable_name,
     ) in DEFAULT_BOOL_OPTION_TO_ENVIRONMENT_VARIABLE.items():
         value = storage_config.get(option_name, False)
-        os.environ[environment_variable_name] = 'yes' if value else 'no'
+        os.environ[environment_variable_name] = 'YES' if value else 'NO'
diff --git a/borgmatic/config/schema.yaml b/borgmatic/config/schema.yaml
index a2f3bea6..5fba09d0 100644
--- a/borgmatic/config/schema.yaml
+++ b/borgmatic/config/schema.yaml
@@ -324,6 +324,12 @@ properties:
                     Bypass Borg error about a previously unknown unencrypted
                     repository. Defaults to false.
                 example: true
+            check_i_know_what_i_am_doing:
+                type: boolean
+                description: |
+                    Bypass Borg confirmation about check with repair option.
+                    Defaults to false.
+                example: true
             extra_borg_options:
                 type: object
                 additionalProperties: false
diff --git a/tests/unit/borg/test_environment.py b/tests/unit/borg/test_environment.py
index 5a08e765..18f7ab42 100644
--- a/tests/unit/borg/test_environment.py
+++ b/tests/unit/borg/test_environment.py
@@ -46,6 +46,7 @@ def test_initialize_without_configuration_should_only_set_default_environment():
         assert {key: value for key, value in os.environ.items() if key.startswith('BORG_')} == {
             'BORG_RELOCATED_REPO_ACCESS_IS_OK': 'no',
             'BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK': 'no',
+            'BORG_CHECK_I_KNOW_WHAT_I_AM_DOING': 'no',
         }
     finally:
         os.environ = orig_environ
@@ -61,6 +62,16 @@ def test_initialize_with_relocated_repo_access_should_override_default():
     finally:
         os.environ = orig_environ
 
+def test_initialize_with_check_i_know_what_i_am_doing_should_override_default():
+    orig_environ = os.environ
+
+    try:
+        os.environ = {}
+        module.initialize({'check_i_know_what_i_am_doing': True})
+        assert os.environ.get('BORG_CHECK_I_KNOW_WHAT_I_AM_DOING') == 'yes'
+    finally:
+        os.environ = orig_environ
+
 
 def test_initialize_prefers_configuration_option_over_borg_environment_variable():
     orig_environ = os.environ