diff --git a/package/libunistring/Config.in b/package/libunistring/Config.in
index ebb37d979..88fc65803 100644
--- a/package/libunistring/Config.in
+++ b/package/libunistring/Config.in
@@ -1,8 +1,12 @@
 config BR2_PACKAGE_LIBUNISTRING
 	bool "libunistring"
+	depends on BR2_USE_WCHAR
 	help
 	  The libunistring library provides functions for manipulating
 	  Unicode strings and for manipulating C strings according to
 	  the Unicode standard.
 
 	  http://www.gnu.org/software/libunistring/
+
+comment "libunistring needs a toolchain w/ wchar"
+	depends on !BR2_USE_WCHAR