diff --git a/manifests/logging.pp b/manifests/logging.pp
index c3002a5..9fd040f 100644
--- a/manifests/logging.pp
+++ b/manifests/logging.pp
@@ -35,7 +35,7 @@
 #
 # [*log_file*]
 #   (Optional) File where logs should be stored.
-#   Defaults to '/var/log/watcher/watcher.log'
+#   Defaults to $facts['os_service_default']
 #
 # [*logging_context_format_string*]
 #   (Optional) Format string to use for log messages with context.
@@ -114,7 +114,7 @@ class watcher::logging(
   $use_stderr                    = $facts['os_service_default'],
   $syslog_log_facility           = $facts['os_service_default'],
   $log_dir                       = '/var/log/watcher',
-  $log_file                      = '/var/log/watcher/watcher.log',
+  $log_file                      = $facts['os_service_default'],
   $debug                         = $facts['os_service_default'],
   $logging_context_format_string = $facts['os_service_default'],
   $logging_default_format_string = $facts['os_service_default'],
diff --git a/releasenotes/notes/drop-hardcoded-log_file-3f656a530073379f.yaml b/releasenotes/notes/drop-hardcoded-log_file-3f656a530073379f.yaml
new file mode 100644
index 0000000..ca1fde5
--- /dev/null
+++ b/releasenotes/notes/drop-hardcoded-log_file-3f656a530073379f.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    The ``watcher::logging::log_file`` now defaults to the os_service_default
+    fact so that log file name is determined automatically accoridng to
+    the process names.
diff --git a/spec/classes/watcher_logging_spec.rb b/spec/classes/watcher_logging_spec.rb
index 08c548d..629e0ec 100644
--- a/spec/classes/watcher_logging_spec.rb
+++ b/spec/classes/watcher_logging_spec.rb
@@ -66,7 +66,7 @@ describe 'watcher::logging' do
         :use_stderr          => '<SERVICE DEFAULT>',
         :syslog_log_facility => '<SERVICE DEFAULT>',
         :log_dir             => '/var/log/watcher',
-        :log_file            => '/var/log/watcher/watcher.log',
+        :log_file            => '<SERVICE DEFAULT>',
         :debug               => '<SERVICE DEFAULT>',
       )
     end