diff --git a/srcpkgs/entr/patches/include-sysctl.patch b/srcpkgs/entr/patches/include-sysctl.patch
new file mode 100644
index 00000000000..2656d48f671
--- /dev/null
+++ b/srcpkgs/entr/patches/include-sysctl.patch
@@ -0,0 +1,10 @@
+--- missing/kqueue_inotify.c	2020-01-02 21:20:12.000000000 +0100
++++ -	2020-02-15 16:35:42.567901553 +0100
+@@ -16,6 +16,7 @@
+ #include <sys/inotify.h>
+ #include <sys/event.h>
+ #include <sys/types.h>
++#include <linux/sysctl.h>
+ 
+ #include <err.h>
+ #include <errno.h>