diff --git a/tester/liblinphone_tester.h b/tester/liblinphone_tester.h
index 365d2b5f7..b3f2c98da 100644
--- a/tester/liblinphone_tester.h
+++ b/tester/liblinphone_tester.h
@@ -78,6 +78,7 @@ extern const char* auth_domain;
 extern const char* test_username;
 extern const char* test_password;
 extern const char* test_route;
+extern const char* userhostsfile;
 
 
 typedef struct _stats {