diff --git a/src/test/check_getdns.c b/src/test/check_getdns.c
index e5974d1d..f2dff1fa 100644
--- a/src/test/check_getdns.c
+++ b/src/test/check_getdns.c
@@ -75,7 +75,7 @@
 
 
 int
-main (int argc, char** argv)
+main ()
 {
   int number_failed;
   SRunner *sr ;
diff --git a/src/test/check_getdns_cancel_callback.h b/src/test/check_getdns_cancel_callback.h
index 7ad31b46..08331771 100644
--- a/src/test/check_getdns_cancel_callback.h
+++ b/src/test/check_getdns_cancel_callback.h
@@ -451,6 +451,8 @@
          void *userarg,
          getdns_transaction_t transaction_id)
      {
+       (void)context; (void)response; (void)userarg;
+
        callback_called++;
 
        if(callback_type == GETDNS_CALLBACK_CANCEL)
@@ -483,6 +485,7 @@
      */
      void verify_getdns_cancel_callback(struct extracted_response *ex_response)
      {
+       (void)ex_response;
        /*
         *  increment callback_called global to prove callback was called.
         */
diff --git a/src/test/check_getdns_common.c b/src/test/check_getdns_common.c
index 79f177a9..87f0727e 100644
--- a/src/test/check_getdns_common.c
+++ b/src/test/check_getdns_common.c
@@ -320,6 +320,7 @@ void destroy_callbackfn(struct getdns_context *context,
                         void *userarg,
                         getdns_transaction_t transaction_id) {
     int* flag = (int*)userarg;
+    (void)callback_type; (void)transaction_id;
     *flag = 1;
     getdns_dict_destroy(response);
     getdns_context_destroy(context);
@@ -339,6 +340,7 @@ void callbackfn(struct getdns_context *context,
 {
   typedef void (*fn_ptr)(struct extracted_response *ex_response);
   fn_ptr fn = userarg;
+  (void)context; (void)transaction_id;
 
   /*
    *  If userarg is NULL, either a negative test case
@@ -378,7 +380,7 @@ void callbackfn(struct getdns_context *context,
 void update_callbackfn(struct getdns_context *context,
                 getdns_context_code_t changed_item)
 {
-
+  (void)context;
   ck_assert_msg(changed_item == expected_changed_item,
     "Expected changed_item == %d, got %d",
     changed_item, expected_changed_item);
diff --git a/src/test/check_getdns_context_destroy.h b/src/test/check_getdns_context_destroy.h
index 52b28456..381da9f8 100644
--- a/src/test/check_getdns_context_destroy.h
+++ b/src/test/check_getdns_context_destroy.h
@@ -267,6 +267,7 @@
 
      void verify_getdns_context_destroy(struct extracted_response *ex_response)
      {
+       (void)ex_response;
        /*
         * Sleep for a second to make getdns_context_destroy() wait.
         */
diff --git a/src/test/check_getdns_context_set_timeout.c b/src/test/check_getdns_context_set_timeout.c
index f588445a..26d25aa5 100644
--- a/src/test/check_getdns_context_set_timeout.c
+++ b/src/test/check_getdns_context_set_timeout.c
@@ -243,6 +243,7 @@ void timeout_3_cb(struct getdns_context *context,
                   getdns_callback_type_t callback_type,
                   struct getdns_dict * response,
                   void *userarg, getdns_transaction_t transaction_id) {
+    (void)response; (void)transaction_id;
     timeout_thread_data *tdata = (timeout_thread_data*)userarg;
     tdata->num_callbacks++;
     if (callback_type == GETDNS_CALLBACK_TIMEOUT) {
diff --git a/src/test/check_getdns_dict_get_names.h b/src/test/check_getdns_dict_get_names.h
index 46f06f0a..0881ad0f 100644
--- a/src/test/check_getdns_dict_get_names.h
+++ b/src/test/check_getdns_dict_get_names.h
@@ -79,7 +79,7 @@
       struct getdns_list *answer = NULL;
       char *keys[3] = { "ten", "eleven", "twelve" };
       uint32_t values[3] = { 10, 11, 12 };
-      int i;
+      size_t i;
       size_t length;
       struct getdns_bindata *key = NULL;
       char string_buffer[20] = "";
diff --git a/src/test/check_getdns_libev.c b/src/test/check_getdns_libev.c
index 9120cf5a..5523f126 100644
--- a/src/test/check_getdns_libev.c
+++ b/src/test/check_getdns_libev.c
@@ -46,6 +46,7 @@
 
 void run_event_loop_impl(struct getdns_context* context, void* eventloop) {
     struct ev_loop* loop = (struct ev_loop*) eventloop;
+    (void)context;
     ev_run(loop, 0);
 }
 
diff --git a/src/test/check_getdns_libevent.c b/src/test/check_getdns_libevent.c
index 304f42ef..e9316b6f 100644
--- a/src/test/check_getdns_libevent.c
+++ b/src/test/check_getdns_libevent.c
@@ -42,6 +42,7 @@
 
 void run_event_loop_impl(struct getdns_context* context, void* eventloop) {
     struct event_base* base = (struct event_base*) eventloop;
+    (void)context;
     event_base_dispatch(base);
 }
 
diff --git a/src/test/check_getdns_libuv.c b/src/test/check_getdns_libuv.c
index 3d830445..b7d50e72 100644
--- a/src/test/check_getdns_libuv.c
+++ b/src/test/check_getdns_libuv.c
@@ -42,6 +42,7 @@
 
 void run_event_loop_impl(struct getdns_context* context, void* eventloop) {
     uv_loop_t* loop = (uv_loop_t*) eventloop;
+    (void)context;
     uv_run(loop, UV_RUN_DEFAULT);
 }
 
diff --git a/src/test/check_getdns_selectloop.c b/src/test/check_getdns_selectloop.c
index b80f1ffd..c315b30c 100644
--- a/src/test/check_getdns_selectloop.c
+++ b/src/test/check_getdns_selectloop.c
@@ -37,9 +37,11 @@
 #include "getdns/getdns_extra.h"
 
 void run_event_loop_impl(struct getdns_context* context, void* eventloop) {
+	(void)eventloop;
  	getdns_context_run(context);
 }
 
 void* create_eventloop_impl(struct getdns_context* context) {
+    (void)context;
     return NULL;
 }
diff --git a/src/test/check_getdns_transport.c b/src/test/check_getdns_transport.c
index 7d97c27c..4b93fdd1 100644
--- a/src/test/check_getdns_transport.c
+++ b/src/test/check_getdns_transport.c
@@ -193,6 +193,8 @@ void transport_cb(struct getdns_context *context,
   struct getdns_dict * response,
   void *userarg, getdns_transaction_t transaction_id) {
   /* Don't really care about the answer*/
+  (void)context; (void)callback_type; (void)response;
+  (void)userarg; (void)transaction_id;
   return;
 }
 
diff --git a/src/test/tests_dict.c b/src/test/tests_dict.c
index 4be804f5..963ba7b4 100644
--- a/src/test/tests_dict.c
+++ b/src/test/tests_dict.c
@@ -214,7 +214,7 @@ tst_getnames(void)
 	size_t index;
 	size_t llen;
 	uint32_t ansint;
-	int i;
+	size_t i;
 	getdns_return_t result;
 	getdns_data_type dtype;
 	struct getdns_dict *dict = NULL;
@@ -508,7 +508,7 @@ tst_create(void)
  *  runs unit tests against list management routines
  */
 int
-main(int argc, char *argv[])
+main()
 {
 	tstmsg_prog_begin("tests_dict");
 
diff --git a/src/test/tests_list.c b/src/test/tests_list.c
index c8a68bd8..ab9a98cf 100644
--- a/src/test/tests_list.c
+++ b/src/test/tests_list.c
@@ -404,7 +404,7 @@ tst_create(void)
  *  runs unit tests against list management routines
  */
 int
-main(int argc, char *argv[])
+main()
 {
 	tstmsg_prog_begin("tests_list");
 
diff --git a/src/test/tests_stub_async.c b/src/test/tests_stub_async.c
index a5b3c995..79a8029c 100644
--- a/src/test/tests_stub_async.c
+++ b/src/test/tests_stub_async.c
@@ -57,6 +57,8 @@ this_callbackfn(struct getdns_context *this_context,
 	struct getdns_dict *this_response,
 	void *this_userarg, getdns_transaction_t this_transaction_id)
 {
+	(void)this_context; (void)this_userarg;
+
 	if (this_callback_type == GETDNS_CALLBACK_COMPLETE) {	/* This is a callback with data */
 		char *res = getdns_pretty_print_dict(this_response);
 		fprintf(stdout, "%s\n", res);