diff --git a/WSJTXLogging.cpp b/WSJTXLogging.cpp
index d18d938ae..93bcb833b 100644
--- a/WSJTXLogging.cpp
+++ b/WSJTXLogging.cpp
@@ -192,7 +192,7 @@ WSJTXLogging::WSJTXLogging ()
         (
          sinks::file::make_collector
          (
-          keywords::max_size = 40 * 1024 * 1024
+          keywords::max_size = 5 * 1024 * 1024
           , keywords::min_free_space = 1024 * 1024 * 1024
           , keywords::max_files = 12
           , keywords::target = app_data.absoluteFilePath ("logs").toStdWString ()
diff --git a/example_log_configurations/wsjtx_log_config.ini.rig_control b/example_log_configurations/wsjtx_log_config.ini.rig_control
index 0bcb82066..bcf981b30 100644
--- a/example_log_configurations/wsjtx_log_config.ini.rig_control
+++ b/example_log_configurations/wsjtx_log_config.ini.rig_control
@@ -7,7 +7,7 @@ TargetFileName="${AppLocalDataLocation}/logs/wsjtx_syslog_%Y-%m.log"
 RotationTimePoint="01 00:00:00"
 Append=true
 EnableFinalRotation=false
-MaxSize=41943040
+MaxSize=52428800
 MinFreeSpace=1073741824
 MaxFiles=12
 Target="${AppLocalDataLocation}/logs"
diff --git a/main.cpp b/main.cpp
index 0960789e0..2db250b33 100644
--- a/main.cpp
+++ b/main.cpp
@@ -225,8 +225,7 @@ int main(int argc, char *argv[])
       // disallow multiple instances with same instance key
       QLockFile instance_lock {temp_dir.absoluteFilePath (a.applicationName () + ".lock")};
       instance_lock.setStaleLockTime (0);
-      bool lock_ok {false};
-      while (!(lock_ok = instance_lock.tryLock ()))
+      while (!instance_lock.tryLock ())
         {
           if (QLockFile::LockFailedError == instance_lock.error ())
             {
@@ -249,6 +248,10 @@ int main(int argc, char *argv[])
                   throw std::runtime_error {"Multiple instances must have unique rig names"};
                 }
             }
+          else
+            {
+              throw std::runtime_error {"Failed to access lock file"};
+            }
         }
 
       // load UI translations