diff --git a/package/tor/Config.in b/package/tor/Config.in
index d44bd9fd98..3400dce2a5 100644
--- a/package/tor/Config.in
+++ b/package/tor/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_TOR
 	bool "tor"
 	depends on BR2_USE_MMU # fork()
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_LIBEVENT
 	select BR2_PACKAGE_OPENSSL
 	select BR2_PACKAGE_ZLIB
@@ -12,3 +13,7 @@ config BR2_PACKAGE_TOR
 	  state security.
 
 	  https://www.torproject.org
+
+comment "tor needs a toolchain w/ threads"
+	depends on BR2_USE_MMU
+	depends on !BR2_TOOLCHAIN_HAS_THREADS