--- a/netconf/src/subsys/netconf-subsystem.c
+++ b/netconf/src/subsys/netconf-subsystem.c
@@ -138,7 +138,7 @@
     int arg_idx = 1;
     char  defname[21];
 
-    strncpy(defname, "/tmp/subsys-err.log", 20);
+    strncpy(defname, "@TERMUX_PREFIX@/tmp/subsys-err.log", 20);
     err_filename = defname;
     while ( arg_idx < argc-1 ) {
         if ( !strcmp( argv[arg_idx], "-filename" ) ||
