diff --git a/lib/curl_addrinfo.h b/lib/curl_addrinfo.h
index ca80f3a45d..dedf1a6dbc 100644
--- a/lib/curl_addrinfo.h
+++ b/lib/curl_addrinfo.h
@@ -38,7 +38,6 @@
 #ifdef __VMS
 #  include <in.h>
 #  include <inet.h>
-#  include <stdlib.h>
 #endif
 
 /*
diff --git a/src/tool_doswin.c b/src/tool_doswin.c
index eca387f7db..9e80d352fb 100644
--- a/src/tool_doswin.c
+++ b/src/tool_doswin.c
@@ -30,7 +30,6 @@
 #endif
 
 #ifdef _WIN32
-#  include <stdlib.h>
 #  include <tlhelp32.h>
 #endif
 
diff --git a/tests/server/first.c b/tests/server/first.c
index 60a1404bbb..a25de1759a 100644
--- a/tests/server/first.c
+++ b/tests/server/first.c
@@ -24,7 +24,6 @@
 #include "first.h"
 
 #include <stdio.h>
-#include <string.h>
 
 int main(int argc, char **argv)
 {
diff --git a/tests/server/mqttd.c b/tests/server/mqttd.c
index 784bab4c3e..70bc4a85a5 100644
--- a/tests/server/mqttd.c
+++ b/tests/server/mqttd.c
@@ -23,9 +23,6 @@
  ***************************************************************************/
 #include "first.h"
 
-#include <stdlib.h>
-#include <string.h>
-
 /* Function
  *
  * Accepts a TCP connection on a custom port (IPv4 or IPv6).  Speaks MQTT.
diff --git a/tests/server/socksd.c b/tests/server/socksd.c
index 91f8c119d9..b9ab49436e 100644
--- a/tests/server/socksd.c
+++ b/tests/server/socksd.c
@@ -23,8 +23,6 @@
  ***************************************************************************/
 #include "first.h"
 
-#include <stdlib.h>
-
 /* Function
  *
  * Accepts a TCP connection on a custom port (IPv4 or IPv6). Connects to a