diff --git a/tests/unittests/config/stub_accounts.c b/tests/unittests/config/stub_accounts.c
index 3451c0c33..a3fcacc76 100644
--- a/tests/unittests/config/stub_accounts.c
+++ b/tests/unittests/config/stub_accounts.c
@@ -22,7 +22,7 @@ accounts_find_all(const char* const prefix, gboolean previous, void* context)
 }
 
 char*
-accounts_find_enabled(char* prefix, void* context)
+accounts_find_enabled(const char* const prefix, gboolean previous, void* context)
 {
     return NULL;
 }
@@ -37,7 +37,7 @@ accounts_reset_enabled_search(void)
 }
 
 void
-accounts_add(const char* jid, const char* altdomain, const int port)
+accounts_add(const char* jid, const char* altdomain, const int port, const char* const tls_policy, const char* const auth_policy)
 {
     check_expected(jid);
     check_expected(altdomain);
diff --git a/tests/unittests/tools/stub_http_upload.c b/tests/unittests/tools/stub_http_upload.c
index 1b79e02db..49320f856 100644
--- a/tests/unittests/tools/stub_http_upload.c
+++ b/tests/unittests/tools/stub_http_upload.c
@@ -33,7 +33,7 @@ file_mime_type(const char* const file_name)
 }
 
 off_t
-file_size(const char* const file_name)
+file_size(int filedes)
 {
     return 0;
 }
diff --git a/tests/unittests/xmpp/stub_avatar.c b/tests/unittests/xmpp/stub_avatar.c
index 768a3aab9..8390077ec 100644
--- a/tests/unittests/xmpp/stub_avatar.c
+++ b/tests/unittests/xmpp/stub_avatar.c
@@ -3,8 +3,9 @@
 #include <stdlib.h>
 
 void avatar_pep_subscribe(void){};
+
 gboolean
-avatar_get_by_nick(const char* nick)
+avatar_get_by_nick(const char* nick, gboolean open)
 {
     return TRUE;
 }