diff --git a/srcpkgs/clisp/patches/readline-7.patch b/srcpkgs/clisp/patches/readline-7.patch
new file mode 100644
index 00000000000..939342c6f4f
--- /dev/null
+++ b/srcpkgs/clisp/patches/readline-7.patch
@@ -0,0 +1,11 @@
+--- modules/readline/readline.lisp.orig	2016-09-20 22:23:51.876046496 +0200
++++ modules/readline/readline.lisp	2016-09-20 22:24:11.070047486 +0200
+@@ -424,7 +424,7 @@
+    "The version of this incarnation of the readline library, e.g., 0x0402."))
+ (def-c-var gnu-readline-p (:name "rl_gnu_readline_p") (:type int)
+   (:documentation "True if this is real GNU readline."))
+-(def-c-var readline-state (:name "rl_readline_state") (:type int)
++(def-c-var readline-state (:name "rl_readline_state") (:type ulong)
+   (:documentation "Flags word encapsulating the current readline state."))
+ (def-c-var editing-mode (:name "rl_editing_mode") (:type int)
+   (:documentation "Says which editing mode readline is currently using.