diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4724bf431..b8ce69f1d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -677,8 +677,11 @@ endif(BUILD_SERVER)
 # Blacklisted locales that don't work.
 # see issue #4638
 set(GETTEXT_BLACKLISTED_LOCALES
+	ar
 	he
 	ky
+	ms_Arab
+	th
 )
 
 option(APPLY_LOCALE_BLACKLIST "Use a blacklist to avoid broken locales" TRUE)