diff --git a/src/config.c b/src/config.c
index fdaa143..de84b04 100644
--- a/src/config.c
+++ b/src/config.c
@@ -709,6 +709,14 @@ static char *split (char *string, int rest_of_line)
  *
  *--------------------------------------------------------------------*/
 
+static void rtfm()
+{
+	text_color_set(DW_COLOR_ERROR);
+	dw_printf ("See online documentation:\n");
+	dw_printf ("    stable release:    https://github.com/wb2osz/direwolf/tree/master/doc\n");
+	dw_printf ("    development version:    https://github.com/wb2osz/direwolf/tree/dev/doc\n");
+	dw_printf ("    additional topics:    https://github.com/wb2osz/direwolf-doc\n");
+}
 
 void config_init (char *fname, struct audio_s *p_audio_config, 
 			struct digi_config_s *p_digi_config,
@@ -970,7 +978,8 @@ void config_init (char *fname, struct audio_s *p_audio_config,
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("ERROR - Could not open config file %s\n", filepath);
 	  dw_printf ("Try using -c command line option for alternate location.\n");
-	  return;
+	  rtfm();
+	  exit(EXIT_FAILURE);
 	}
 	
 	dw_printf ("\nReading config file %s\n", filepath);
@@ -1027,7 +1036,8 @@ void config_init (char *fname, struct audio_s *p_audio_config,
 	    if (t == NULL) {
 	      text_color_set(DW_COLOR_ERROR);
 	      dw_printf ("Config file: Missing name of audio device for ADEVICE command on line %d.\n", line);
-	      continue;
+	      rtfm();
+	      exit(EXIT_FAILURE);
 	    }
 
 	    p_audio_config->adev[adevice].defined = 1;
@@ -1986,7 +1996,7 @@ void config_init (char *fname, struct audio_s *p_audio_config,
 	      dw_printf ("Config file line %d: %s with CM108 is only available when USB Audio GPIO support is enabled.\n", line, otname);
 	      dw_printf ("You must rebuild direwolf with CM108 Audio Adapter GPIO PTT support.\n");
 	      dw_printf ("See Interface Guide for details.\n");
-
+	      rtfm();
 	      exit (EXIT_FAILURE);
 #endif
 	    }
diff --git a/src/direwolf.c b/src/direwolf.c
index 0bf2116..1a92968 100644
--- a/src/direwolf.c
+++ b/src/direwolf.c
@@ -138,7 +138,7 @@ static BOOL cleanup_win (int);
 static void cleanup_linux (int);
 #endif
 
-static void usage (char **argv);
+static void usage ();
 
 #if defined(__SSE__) && !defined(__APPLE__)
 
@@ -598,7 +598,7 @@ int main (int argc, char *argv[])
           case '?':
 
             /* For '?' unknown option message was already printed. */
-            usage (argv);
+            usage ();
             break;
 
 	  case 'd':				/* Set debug option. */
@@ -742,7 +742,7 @@ int main (int argc, char *argv[])
             /* Should not be here. */
 	    text_color_set(DW_COLOR_DEBUG);
             dw_printf("?? getopt returned character code 0%o ??\n", c);
-            usage (argv);
+            usage ();
           }
 	}  /* end while(1) for options */
 
@@ -987,6 +987,7 @@ int main (int argc, char *argv[])
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("Pointless to continue without audio device.\n");
 	  SLEEP_SEC(5);
+	  usage ();
 	  exit (1);
 	}
 
@@ -1722,16 +1723,16 @@ static void usage (char **argv)
 	dw_printf ("\n");
   
 #if __WIN32__
-	dw_printf ("Complete documentation can be found in the 'doc' folder\n");
+	dw_printf ("Documentation can be found in the 'doc' folder\n");
 #else
 	// TODO: Could vary by platform and build options.
-	dw_printf ("Complete documentation can be found in /usr/local/share/doc/direwolf\n");
+	dw_printf ("Documentation can be found in /usr/local/share/doc/direwolf\n");
 #endif
 	dw_printf ("or online at https://github.com/wb2osz/direwolf/tree/master/doc\n");
+	dw_printf ("additional topics: https://github.com/wb2osz/direwolf-doc\n");
 	text_color_set(DW_COLOR_INFO);
 	exit (EXIT_FAILURE);
 }
 
 
-
 /* end direwolf.c */