diff --git a/tests/unittests/omemo/stub_omemo.c b/tests/unittests/omemo/stub_omemo.c
index 4b3548a4..fe5d27c5 100644
--- a/tests/unittests/omemo/stub_omemo.c
+++ b/tests/unittests/omemo/stub_omemo.c
@@ -4,6 +4,7 @@
 #include "ui/ui.h"
 
 void omemo_init(void) {}
+void omemo_close(void) {}
 
 char*
 omemo_fingerprint_autocomplete(const char *const search_str, gboolean previous)