diff --git a/src/liboptions/options.h b/src/liboptions/options.h
index 5f494e0..5899e4c 100644
--- a/src/liboptions/options.h
+++ b/src/liboptions/options.h
@@ -1,4 +1,5 @@
 
+extern const char *selected_config_file;
 char *options_strdup(const char *s);
 void option_add(int short_option, const char *long_option, int parameter_count);
 int options_config_file(int argc, char *argv[], const char *config_file, int (*handle_options)(int short_option, int argi, char *argv[]));