diff --git a/init/Kconfig b/init/Kconfig
index 21b1f4870c807fc69ed2872a1a93b1d705d46cd7..45bcaa8e7481d72eb42f90d7baadd98716d53031 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1896,6 +1896,7 @@ choice
 
 config SLAB
 	bool "SLAB"
+	depends on !PREEMPT_RT
 	select HAVE_HARDENED_USERCOPY_ALLOCATOR
 	help
 	  The regular slab allocator that is established and known to work
@@ -1916,6 +1917,7 @@ config SLUB
 config SLOB
 	depends on EXPERT
 	bool "SLOB (Simple Allocator)"
+	depends on !PREEMPT_RT
 	help
 	   SLOB replaces the stock allocator with a drastically simpler
 	   allocator. SLOB is generally more space efficient but