diff --git a/manifests/init.pp b/manifests/init.pp
index b02dfe42b..d702310c2 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -233,7 +233,7 @@
 #
 # [*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
 #
 # [*state_path*]
diff --git a/manifests/logging.pp b/manifests/logging.pp
index 5defa53c3..cd59942f8 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/nova'
 #
 #  [*logging_context_format_string*]
diff --git a/releasenotes/notes/fix_log_dir_documentation-293f082d64a379f2.yaml b/releasenotes/notes/fix_log_dir_documentation-293f082d64a379f2.yaml
new file mode 100644
index 000000000..25e070f3c
--- /dev/null
+++ b/releasenotes/notes/fix_log_dir_documentation-293f082d64a379f2.yaml
@@ -0,0 +1,3 @@
+---
+fixes:
+  - Fixed documentation for log_dir parameter