diff --git a/app-misc/screen/files/screen-4.9.1-add-missing-pty.h-header.patch b/app-misc/screen/files/screen-4.9.1-add-missing-pty.h-header.patch
new file mode 100644
index 0000000000000..f66d862680883
--- /dev/null
+++ b/app-misc/screen/files/screen-4.9.1-add-missing-pty.h-header.patch
@@ -0,0 +1,10 @@
+--- a/pty.c
++++ b/pty.c
+@@ -29,6 +29,7 @@
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
++#include <pty.h>
+ #include <signal.h>
+ 
+ #if defined(__OpenBSD__)
diff --git a/app-misc/screen/screen-4.9.1-r1.ebuild b/app-misc/screen/screen-4.9.1-r1.ebuild
index c9654d5afcb0a..a67862bea3771 100644
--- a/app-misc/screen/screen-4.9.1-r1.ebuild
+++ b/app-misc/screen/screen-4.9.1-r1.ebuild
@@ -34,6 +34,7 @@ PATCHES=(
 	# Don't use utempter even if it is found on the system.
 	"${FILESDIR}"/${PN}-4.3.0-no-utempter.patch
 	"${FILESDIR}"/${PN}-4.9.1-utmp-exit.patch
+	"${FILESDIR}"/${PN}-4.9.1-add-missing-pty.h-header.patch
 )
 
 src_prepare() {