diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index e09edfa560da5c1ec5eb0d40f247d13a5eee29c7..be7556028291c3132b1762d5cc87fc5160ae3768 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -39,6 +39,10 @@ config ARCH_REUSE_HOST_VSYSCALL_AREA
 	bool
 	default y
 
+config GENERIC_FIND_NEXT_BIT
+	bool
+	default y
+
 config GENERIC_HWEIGHT
 	bool
 	default y
diff --git a/arch/um/Kconfig.x86_64 b/arch/um/Kconfig.x86_64
index 5696e7b374b31904b7559d045b7235b4e25bcf3e..4ab5aa62ff3fd054351119338353fa7a06506c14 100644
--- a/arch/um/Kconfig.x86_64
+++ b/arch/um/Kconfig.x86_64
@@ -34,6 +34,10 @@ config SMP_BROKEN
 	bool
 	default y
 
+config GENERIC_FIND_NEXT_BIT
+	bool
+	default y
+
 config GENERIC_HWEIGHT
 	bool
 	default y