diff --git a/dnstap/unbound-dnstap-socket.c b/dnstap/unbound-dnstap-socket.c
index 8c37654e8..8e28be4e8 100644
--- a/dnstap/unbound-dnstap-socket.c
+++ b/dnstap/unbound-dnstap-socket.c
@@ -727,7 +727,7 @@ static ssize_t tap_receive(struct tap_data* data, void* buf, size_t len)
 }
 
 /** delete the tap structure */
-void tap_data_free(struct tap_data* data)
+static void tap_data_free(struct tap_data* data)
 {
 	ub_event_del(data->ev);
 	ub_event_free(data->ev);
@@ -1355,6 +1355,10 @@ int main(int argc, char** argv)
 struct tube;
 struct query_info;
 #include "util/data/packed_rrset.h"
+#include "daemon/worker.h"
+#include "daemon/remote.h"
+#include "util/fptr_wlist.h"
+#include "libunbound/context.h"
 
 void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
 	uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
diff --git a/doc/Changelog b/doc/Changelog
index dc4dee115..07a8e6ea4 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -6,6 +6,7 @@
 	  missing prototype warnings.
 	- Merge PR #373 from fobser: Warning: arithmetic on a pointer to void
 	  is a GNU extension.
+	- Fix missing prototypes in the code.
 
 3 December 2020: Wouter
 	- make depend.
diff --git a/dynlibmod/dynlibmod.c b/dynlibmod/dynlibmod.c
index 3bf9d1acb..3f148ebb6 100644
--- a/dynlibmod/dynlibmod.c
+++ b/dynlibmod/dynlibmod.c
@@ -5,16 +5,16 @@
  * module actions.
  */
 #include "config.h"
+#include "dynlibmod/dynlibmod.h"
 #include "util/module.h"
 #include "util/config_file.h"
-#include "dynlibmod/dynlibmod.h"
 
 #if HAVE_WINDOWS_H
 #include <windows.h>
 #define __DYNMOD HMODULE
 #define __DYNSYM FARPROC
 #define __LOADSYM GetProcAddress
-void log_dlerror() {
+static void log_dlerror() {
     DWORD dwLastError = GetLastError();
     LPSTR MessageBuffer;
     DWORD dwBufferLength;
@@ -37,11 +37,11 @@ void log_dlerror() {
 
 }
 
-HMODULE open_library(const char* fname) {
+static HMODULE open_library(const char* fname) {
     return LoadLibrary(fname);
 }
 
-void close_library(const char* fname, __DYNMOD handle) {
+static void close_library(const char* fname, __DYNMOD handle) {
 	(void)fname;
 	(void)handle;
 }
@@ -50,15 +50,15 @@ void close_library(const char* fname, __DYNMOD handle) {
 #define __DYNMOD void*
 #define __DYNSYM void*
 #define __LOADSYM dlsym
-void log_dlerror() {
+static void log_dlerror() {
     log_err("dynlibmod: %s", dlerror());
 }
 
-void* open_library(const char* fname) {
+static void* open_library(const char* fname) {
     return dlopen(fname, RTLD_LAZY | RTLD_GLOBAL);
 }
 
-void close_library(const char* fname, __DYNMOD handle) {
+static void close_library(const char* fname, __DYNMOD handle) {
 	if(!handle) return;
 	if(dlclose(handle) != 0) {
 		log_err("dlclose %s: %s", fname, strerror(errno));
diff --git a/libunbound/libworker.c b/libunbound/libworker.c
index 06cbb8869..03bbaf768 100644
--- a/libunbound/libworker.c
+++ b/libunbound/libworker.c
@@ -73,6 +73,9 @@
 #include "iterator/iter_hints.h"
 #include "sldns/sbuffer.h"
 #include "sldns/str2wire.h"
+#ifdef USE_DNSTAP
+#include "dnstap/dtstream.h"
+#endif
 
 #ifdef HAVE_TARGETCONDITIONALS_H
 #include <TargetConditionals.h>
diff --git a/pythonmod/pythonmod_utils.c b/pythonmod/pythonmod_utils.c
index 5d70f2b4b..9f7282540 100644
--- a/pythonmod/pythonmod_utils.c
+++ b/pythonmod/pythonmod_utils.c
@@ -39,6 +39,7 @@
  * conversions.
  */
 #include "config.h"
+#include "pythonmod/pythonmod_utils.h"
 #include "util/module.h"
 #include "util/netevent.h"
 #include "util/net_help.h"
diff --git a/pythonmod/pythonmod_utils.h b/pythonmod/pythonmod_utils.h
index 768eb46de..4ea86f9be 100644
--- a/pythonmod/pythonmod_utils.h
+++ b/pythonmod/pythonmod_utils.h
@@ -43,6 +43,7 @@
 
 #include "util/module.h"
 struct delegpt_addr;
+struct sldns_buffer;
 
 /**
  *  Store the reply_info and query_info pair in message cache (qstate->msg_cache)
@@ -77,7 +78,7 @@ void invalidateQueryInCache(struct module_qstate* qstate, struct query_info* qin
  * @param pkt: a sldns_buffer which contains sldns_packet data
  * @return 0 on failure, out of memory or parse error.
  */
-int createResponse(struct module_qstate* qstate, sldns_buffer* pkt);
+int createResponse(struct module_qstate* qstate, struct sldns_buffer* pkt);
 
 /**
  *  Convert reply->addr to string
diff --git a/services/listen_dnsport.c b/services/listen_dnsport.c
index 709c9e6ce..629d4de72 100644
--- a/services/listen_dnsport.c
+++ b/services/listen_dnsport.c
@@ -2793,7 +2793,7 @@ void http2_req_stream_clear(struct http2_stream* h2_stream)
 	}
 }
 
-nghttp2_session_callbacks* http2_req_callbacks_create()
+nghttp2_session_callbacks* http2_req_callbacks_create(void)
 {
 	nghttp2_session_callbacks *callbacks;
 	if(nghttp2_session_callbacks_new(&callbacks) == NGHTTP2_ERR_NOMEM) {
diff --git a/services/listen_dnsport.h b/services/listen_dnsport.h
index 9d6ea2c33..f438ff458 100644
--- a/services/listen_dnsport.h
+++ b/services/listen_dnsport.h
@@ -404,7 +404,7 @@ size_t http2_get_response_buffer_size(void);
  * Create nghttp2 callbacks to handle HTTP2 requests.
  * @return malloc'ed struct, NULL on failure
  */
-nghttp2_session_callbacks* http2_req_callbacks_create();
+nghttp2_session_callbacks* http2_req_callbacks_create(void);
 
 /** Free http2 stream buffers and decrease buffer counters */
 void http2_req_stream_clear(struct http2_stream* h2_stream);
diff --git a/smallapp/worker_cb.c b/smallapp/worker_cb.c
index 78d921a3c..cdf855dc3 100644
--- a/smallapp/worker_cb.c
+++ b/smallapp/worker_cb.c
@@ -46,6 +46,9 @@
 #include "util/fptr_wlist.h"
 #include "util/log.h"
 #include "services/mesh.h"
+#ifdef USE_DNSTAP
+#include "dnstap/dtstream.h"
+#endif
 
 void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
 	uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
diff --git a/testcode/fake_event.c b/testcode/fake_event.c
index 591557c35..75a6b8db9 100644
--- a/testcode/fake_event.c
+++ b/testcode/fake_event.c
@@ -64,6 +64,7 @@
 #include "sldns/sbuffer.h"
 #include "sldns/wire2str.h"
 #include "sldns/str2wire.h"
+#include "daemon/remote.h"
 #include <signal.h>
 struct worker;
 struct daemon_remote;
diff --git a/testcode/testbound.c b/testcode/testbound.c
index 3f3e106b0..5e10779fc 100644
--- a/testcode/testbound.c
+++ b/testcode/testbound.c
@@ -42,16 +42,22 @@
 #ifdef HAVE_TIME_H
 #  include <time.h>
 #endif
+#include <ctype.h>
 #include "testcode/testpkts.h"
 #include "testcode/replay.h"
 #include "testcode/fake_event.h"
 #include "daemon/remote.h"
+#include "libunbound/worker.h"
 #include "util/config_file.h"
 #include "sldns/keyraw.h"
-#include <ctype.h>
+#ifdef UB_ON_WINDOWS
+#include "winrc/win_svc.h"
+#endif
 
 /** signal that this is a testbound compile */
 #define unbound_testbound 1
+/** renamed main routine */
+int daemon_main(int argc, char* argv[]);
 /** 
  * include the main program from the unbound daemon.
  * rename main to daemon_main to call it
@@ -333,7 +339,7 @@ setup_playback(const char* filename, int* pass_argc, char* pass_argv[])
 }
 
 /** remove config file at exit */
-void remove_configfile(void)
+static void remove_configfile(void)
 {
 	struct config_strlist* p;
 	for(p=cfgfiles; p; p=p->next)
@@ -551,22 +557,28 @@ void remote_get_opt_ssl(char* ATTR_UNUSED(str), void* ATTR_UNUSED(arg))
         log_assert(0);
 }
 
+#ifdef UB_ON_WINDOWS
 void wsvc_command_option(const char* ATTR_UNUSED(wopt), 
 	const char* ATTR_UNUSED(cfgfile), int ATTR_UNUSED(v), 
 	int ATTR_UNUSED(c))
 {
 	log_assert(0);
 }
+#endif
 
+#ifdef UB_ON_WINDOWS
 void wsvc_setup_worker(struct worker* ATTR_UNUSED(worker))
 {
 	/* do nothing */
 }
+#endif
 
+#ifdef UB_ON_WINDOWS
 void wsvc_desetup_worker(struct worker* ATTR_UNUSED(worker))
 {
 	/* do nothing */
 }
+#endif
 
 #ifdef UB_ON_WINDOWS
 void worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev),