diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 44c6a82..e5a98b3 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1002,6 +1002,12 @@ config NR_CPUS
 
 config SCHED_SMT
 	def_bool y if SMP
+	depends on SMP
+	---help---
+	  SMT scheduler support improves the CPU scheduler's decision making
+	  when dealing with Intel Pentium 4 chips with HyperThreading at a
+	  cost of slightly increased overhead in some places. If unsure say
+	  N here.
 
 config SCHED_MC
 	def_bool y