diff --git a/pkgs/development/libraries/libtiff/rename-version.patch b/pkgs/development/libraries/libtiff/rename-version.patch
index ddd33ad49045..3e93569d4245 100644
--- a/pkgs/development/libraries/libtiff/rename-version.patch
+++ b/pkgs/development/libraries/libtiff/rename-version.patch
@@ -1,3 +1,4 @@
+fix case-insensitive build
 --- a/Makefile.am
 +++ b/Makefile.am
 @@ -34,7 +34,7 @@ docfiles = \