diff --git a/tests/gpg/t-thread-keylist-verify.c b/tests/gpg/t-thread-keylist-verify.c
index 55af88a1..c77d6da4 100644
--- a/tests/gpg/t-thread-keylist-verify.c
+++ b/tests/gpg/t-thread-keylist-verify.c
@@ -53,6 +53,7 @@ start_keylist (void *arg)
   gpgme_ctx_t ctx;
   gpgme_key_t key;
 
+  (void)arg;
   err = gpgme_new (&ctx);
   fail_if_err (err);
 
@@ -61,6 +62,7 @@ start_keylist (void *arg)
 
   while (!(err = gpgme_op_keylist_next (ctx, &key)));
 
+  gpgme_release (ctx);
   return NULL;
 }
 
@@ -73,6 +75,8 @@ start_verify (void *arg)
   gpgme_verify_result_t result;
   gpgme_signature_t signature;
 
+  (void)arg;
+
   err = gpgme_new (&ctx);
   fail_if_err (err);
 
@@ -99,6 +103,7 @@ start_verify (void *arg)
                __FILE__, __LINE__, gpgme_strerror (signature->status));
       exit (1);
     }
+  gpgme_release (ctx);
   return NULL;
 }
 
@@ -110,6 +115,9 @@ main (int argc, char *argv[])
   pthread_t keylist_threads[THREAD_COUNT];
   init_gpgme (GPGME_PROTOCOL_OpenPGP);
 
+  (void)argc;
+  (void)argv;
+
   for (i = 0; i < THREAD_COUNT; i++)
     {
       if (pthread_create(&verify_threads[i], NULL, start_verify, NULL) ||
diff --git a/tests/gpg/t-thread-keylist.c b/tests/gpg/t-thread-keylist.c
index 14f7718b..d585bf48 100644
--- a/tests/gpg/t-thread-keylist.c
+++ b/tests/gpg/t-thread-keylist.c
@@ -41,6 +41,7 @@ start_keylist (void *arg)
   gpgme_ctx_t ctx;
   gpgme_key_t key;
 
+  (void) arg;
   err = gpgme_new (&ctx);
   fail_if_err (err);
 
@@ -49,6 +50,8 @@ start_keylist (void *arg)
 
   while (!(err = gpgme_op_keylist_next (ctx, &key)));
 
+  gpgme_release (ctx);
+
   return NULL;
 }
 
@@ -59,6 +62,9 @@ main (int argc, char *argv[])
   pthread_t keylist_threads[THREAD_COUNT];
   init_gpgme (GPGME_PROTOCOL_OpenPGP);
 
+  (void)argc;
+  (void)argv;
+
   for (i = 0; i < THREAD_COUNT; i++)
     {
       if (pthread_create(&keylist_threads[i], NULL, start_keylist, NULL))