diff --git a/tests/test_group_avatar_sql.c b/tests/test_group_avatar_sql.c
index d41911e8..2963ced4 100644
--- a/tests/test_group_avatar_sql.c
+++ b/tests/test_group_avatar_sql.c
@@ -4,6 +4,7 @@
 #include "../lib/debug_config.h"
 #include <assert.h>
 #include <stdlib.h>
+#include <openssl/evp.h>
 
 static int fail_hash;
 static unsigned events;