diff --git a/X2Log.Observer.LogFile.pas b/X2Log.Observer.LogFile.pas
index cb99749..5f63c05 100644
--- a/X2Log.Observer.LogFile.pas
+++ b/X2Log.Observer.LogFile.pas
@@ -59,6 +59,7 @@ uses
 constructor TX2LogFileObserver.Create(const AOutputFileName: string; ALogLevels: TX2LogLevels; ALogDetails: Boolean);
 begin
   FOutputFileName := AOutputFileName;
+  FLogDetails := ALogDetails;
 
   inherited Create(ALogLevels);
 end;
diff --git a/X2Log.Observer.RollingLogFile.pas b/X2Log.Observer.RollingLogFile.pas
index 00bba2f..3958202 100644
--- a/X2Log.Observer.RollingLogFile.pas
+++ b/X2Log.Observer.RollingLogFile.pas
@@ -96,7 +96,7 @@ begin
   FFormatSettings := TFormatSettings.Create;
   FDateFormat := GetLogResourceString(@RollingLogFileDateFormat);
 
-  inherited Create(AFileName);
+  inherited Create(AFileName, ALogDetails);
 end;