diff --git a/include/libwebsockets.h b/include/libwebsockets.h
index c60b87dcc..544a9db5d 100644
--- a/include/libwebsockets.h
+++ b/include/libwebsockets.h
@@ -147,6 +147,10 @@ typedef unsigned long long lws_intptr_t;
 #endif
 #endif
 
+#if defined(__FreeBSD__)
+#include <sys/signal.h>
+#endif
+
 #if defined(__GNUC__)
 
 /* warn_unused_result attribute only supported by GCC 3.4 or later */
diff --git a/lib/plat/unix/unix-spawn.c b/lib/plat/unix/unix-spawn.c
index 9d2d20759..894a17186 100644
--- a/lib/plat/unix/unix-spawn.c
+++ b/lib/plat/unix/unix-spawn.c
@@ -435,7 +435,11 @@ lws_spawn_piped(const struct lws_spawn_piped_info *i)
 	if (lsp->info.disable_ctrlc)
 		/* stops non-daemonized main processess getting SIGINT
 		 * from TTY */
+#if defined(__FreeBSD__)
+		setpgid(0, 0);
+#else
 		setpgrp();
+#endif
 
 	if (lsp->child_pid) {