diff --git a/src/globals.js b/src/globals.js
index 22048703..666722c5 100755
--- a/src/globals.js
+++ b/src/globals.js
@@ -63,7 +63,7 @@ let configFileOption;
 let configFileExpanded;
 let configFilePath;
 let configFileBasename;
-let configFileExtension = 'yaml';
+let configFileExtension = '.yaml';
 if (options.configfile && options.configfile.length > 0) {
     configFileOption = options.configfile;
     configFileExpanded = path.resolve(options.configfile);
@@ -85,12 +85,21 @@ if (options.configfile && options.configfile.length > 0) {
         console.log('Error: Specified config file does not exist');
         process.exit(1);
     }
+} else {
+    // Set default values of environment variables controlling config file location and name
+    if (process.env.NODE_CONFIG_DIR === undefined) {
+        process.env.NODE_CONFIG_DIR = path.join(process.cwd(), 'config');
+    }
+
+    if (process.env.NODE_ENV === undefined) {
+        process.env.NODE_ENV = 'production';
+    }
 }
 
-// Set global variable conttaining the name and full pathof the config file
+// Set global variable conttaining the name and full path of the config file
 const configFile = path.join(
     process.env.NODE_CONFIG_DIR,
-    process.env.NODE_ENV + configFileExtension
+    `${process.env.NODE_ENV}${configFileExtension}`
 );
 
 // Are we running as standalone app or not?
@@ -148,6 +157,13 @@ const logger = winston.createLogger({
     ),
 });
 
+// Show contents of environment variables controlling config file location and name
+logger.debug(`NODE_CONFIG_DIR: ${process.env.NODE_CONFIG_DIR}`);
+logger.debug(`NODE_ENV: ${process.env.NODE_ENV}`);
+
+// Output config file name and path to log
+logger.info(`Using config file: ${configFile}`);
+
 // Function to get current logging level
 const getLoggingLevel = () => logTransports.find((transport) => transport.name === 'console').level;