diff --git a/manifests/init.pp b/manifests/init.pp
index dfc06b004..8356a24f6 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -315,7 +315,7 @@
 #
 # [*log_dir*]
 #   (optional) Directory where logs should be stored
-#   If set to boolean false, it will not log to any directory
+#   If set to $::os_service_default, it will not log to any directory
 #   Defaults to undef
 #
 # [*manage_logging*]
diff --git a/manifests/logging.pp b/manifests/logging.pp
index 1ebb59f2c..40caa1052 100644
--- a/manifests/logging.pp
+++ b/manifests/logging.pp
@@ -22,7 +22,7 @@
 #
 # [*log_dir*]
 #   (optional) Directory where logs should be stored
-#   If set to boolean false, it will not log to any directory
+#   If set to $::os_service_default, it will not log to any directory
 #   Defaults to /var/log/neutron
 #
 # [*log_config_append*]
diff --git a/releasenotes/notes/fix_log_dir_documentation-62f9d418f97fe629.yaml b/releasenotes/notes/fix_log_dir_documentation-62f9d418f97fe629.yaml
new file mode 100644
index 000000000..25e070f3c
--- /dev/null
+++ b/releasenotes/notes/fix_log_dir_documentation-62f9d418f97fe629.yaml
@@ -0,0 +1,3 @@
+---
+fixes:
+  - Fixed documentation for log_dir parameter