diff --git a/srcpkgs/flex/patches/disable-tests.patch b/srcpkgs/flex/patches/disable-tests.patch
new file mode 100644
index 00000000000..96dd18690f0
--- /dev/null
+++ b/srcpkgs/flex/patches/disable-tests.patch
@@ -0,0 +1,10 @@
+--- Makefile.in.orig	2015-11-18 07:34:53.757836866 +0100
++++ Makefile.in	2015-11-18 07:35:01.197909320 +0100
+@@ -450,7 +450,6 @@ SUBDIRS = \
+ 	doc \
+ 	examples \
+ 	po \
+-	tests \
+ 	tools
+ 
+ all: all-recursive