diff --git a/src/local.c b/src/local.c
index 476d9e41..c33c85a3 100644
--- a/src/local.c
+++ b/src/local.c
@@ -110,9 +110,9 @@ static int fast_open = 0;
 
 static struct ev_signal sigint_watcher;
 static struct ev_signal sigterm_watcher;
-static struct ev_signal sigchld_watcher;
 #ifndef __MINGW32__
-    struct ev_signal sigusr1_watcher;
+static struct ev_signal sigchld_watcher;
+static struct ev_signal sigusr1_watcher;
 #endif
 
 #ifdef HAVE_SETRLIMIT
@@ -1130,17 +1130,17 @@ signal_cb(EV_P_ ev_signal *w, int revents)
 {
     if (revents & EV_SIGNAL) {
         switch (w->signum) {
+#ifndef __MINGW32__
         case SIGCHLD:
             LOGE("plugin service exit unexpectedly");
-        case SIGINT:
-        case SIGTERM:
-#ifndef __MINGW32__
         case SIGUSR1:
 #endif
+        case SIGINT:
+        case SIGTERM:
             ev_signal_stop(EV_DEFAULT, &sigint_watcher);
             ev_signal_stop(EV_DEFAULT, &sigterm_watcher);
-            ev_signal_stop(EV_DEFAULT, &sigchld_watcher);
 #ifndef __MINGW32__
+            ev_signal_stop(EV_DEFAULT, &sigchld_watcher);
             ev_signal_stop(EV_DEFAULT, &sigusr1_watcher);
 #endif
             keep_resolving = 0;
@@ -1505,15 +1505,15 @@ main(int argc, char **argv)
     listen_ctx.mptcp   = mptcp;
 
     // Setup signal handler
-    struct ev_signal sigint_watcher;
-    struct ev_signal sigterm_watcher;
-    struct ev_signal sigchld_watcher;
     ev_signal_init(&sigint_watcher, signal_cb, SIGINT);
     ev_signal_init(&sigterm_watcher, signal_cb, SIGTERM);
-    ev_signal_init(&sigchld_watcher, signal_cb, SIGCHLD);
     ev_signal_start(EV_DEFAULT, &sigint_watcher);
     ev_signal_start(EV_DEFAULT, &sigterm_watcher);
+
+#ifndef __MINGW32__
+    ev_signal_init(&sigchld_watcher, signal_cb, SIGCHLD);
     ev_signal_start(EV_DEFAULT, &sigchld_watcher);
+#endif
 
     struct ev_loop *loop = EV_DEFAULT;
 
@@ -1599,10 +1599,6 @@ main(int argc, char **argv)
     winsock_cleanup();
 #endif
 
-    ev_signal_stop(EV_DEFAULT, &sigint_watcher);
-    ev_signal_stop(EV_DEFAULT, &sigterm_watcher);
-    ev_signal_stop(EV_DEFAULT, &sigchld_watcher);
-
     return 0;
 }
 
@@ -1656,13 +1652,13 @@ start_ss_local_server(profile_t profile)
 
     ev_signal_init(&sigint_watcher, signal_cb, SIGINT);
     ev_signal_init(&sigterm_watcher, signal_cb, SIGTERM);
-    ev_signal_init(&sigchld_watcher, signal_cb, SIGCHLD);
     ev_signal_start(EV_DEFAULT, &sigint_watcher);
     ev_signal_start(EV_DEFAULT, &sigterm_watcher);
-    ev_signal_start(EV_DEFAULT, &sigchld_watcher);
 #ifndef __MINGW32__
     ev_signal_init(&sigusr1_watcher, signal_cb, SIGUSR1);
+    ev_signal_init(&sigchld_watcher, signal_cb, SIGCHLD);
     ev_signal_start(EV_DEFAULT, &sigusr1_watcher);
+    ev_signal_start(EV_DEFAULT, &sigchld_watcher);
 #endif
 
     // Setup keys
diff --git a/src/plugin.c b/src/plugin.c
index d9fdc7f1..85dc2b46 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -135,7 +135,8 @@ start_plugin(const char *plugin,
 }
 
 uint16_t
-get_local_port() {
+get_local_port()
+{
     int sock = socket(AF_INET, SOCK_STREAM, 0);
     if (sock < 0) {
         return 0;
@@ -162,7 +163,8 @@ get_local_port() {
 }
 
 void
-stop_plugin() {
+stop_plugin()
+{
     if (sub != NULL) {
         cork_subprocess_abort(sub);
         cork_subprocess_free(sub);
@@ -171,6 +173,11 @@ stop_plugin() {
 
 #else
 
+#include "stdint.h"
+
+#include "utils.h"
+#include "plugin.h"
+
 int
 start_plugin(const char *plugin,
              const char *remote_host,
@@ -179,16 +186,18 @@ start_plugin(const char *plugin,
              const char *local_port)
 {
     FATAL("Plugin is not supported on MinGW.");
+    return -1;
 }
 
 uint16_t
 get_local_port()
 {
     FATAL("Plugin is not supported on MinGW.");
-
+    return 0;
 }
 
-int stop_plugin()
+void
+stop_plugin()
 {
     FATAL("Plugin is not supported on MinGW.");
 }
diff --git a/src/tunnel.c b/src/tunnel.c
index 2380bb8d..8c8c707d 100644
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -101,9 +101,11 @@ static int auth      = 0;
 static int nofile = 0;
 #endif
 
+#ifndef __MINGW32__
 static struct ev_signal sigint_watcher;
 static struct ev_signal sigterm_watcher;
 static struct ev_signal sigchld_watcher;
+#endif
 
 #ifndef __MINGW32__
 static int
@@ -714,6 +716,7 @@ accept_cb(EV_P_ ev_io *w, int revents)
     ev_timer_start(EV_A_ & remote->send_ctx->watcher);
 }
 
+#ifndef __MINGW32__
 static void
 signal_cb(EV_P_ ev_signal *w, int revents)
 {
@@ -726,12 +729,12 @@ signal_cb(EV_P_ ev_signal *w, int revents)
             ev_signal_stop(EV_DEFAULT, &sigint_watcher);
             ev_signal_stop(EV_DEFAULT, &sigterm_watcher);
             ev_signal_stop(EV_DEFAULT, &sigchld_watcher);
-
             keep_resolving = 0;
             ev_unloop(EV_A_ EVUNLOOP_ALL);
         }
     }
 }
+#endif
 
 int
 main(int argc, char **argv)