--- src/Overlays.cxx.orig	2005-02-12 13:58:16.527529528 +0100
+++ src/Overlays.cxx	2005-02-12 13:58:47.580808712 +0100
@@ -490,7 +490,7 @@
     return;
   
   strcpy( arpname, fg_root );
-  strcat( arpname, "/Airports/default.apt.gz" );
+  strcat( arpname, "/Airports/apt.dat.gz" );
 
   gzFile arp;
 
@@ -580,7 +580,7 @@
     return;
   
   strcpy( navname, fg_root );
-  strcat( navname, "/Navaids/default.nav.gz" );
+  strcat( navname, "/Navaids/nav.dat.gz" );
 
   gzFile nav;
 
@@ -653,7 +653,7 @@
     return;
   
   strcpy( navname, fg_root );
-  strcat( navname, "/Navaids/default.fix.gz" );
+  strcat( navname, "/Navaids/fix.dat.gz" );
 
   gzFile fix;