diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst
index 6982b63775da..a526ca1c688b 100644
--- a/Documentation/rust/arch-support.rst
+++ b/Documentation/rust/arch-support.rst
@@ -17,3 +17,5 @@ Architecture  Level of support  Constraints
 ============  ================  ==============================================
 ``x86``       Maintained        ``x86_64`` only.
 ============  ================  ==============================================
+``um``        Maintained        ``x86_64`` only.
+============  ================  ==============================================
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index ad4ff3b0e91e..4db186f019ae 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -28,6 +28,7 @@ config UML
 	select TRACE_IRQFLAGS_SUPPORT
 	select TTY # Needed for line.c
 	select HAVE_ARCH_VMAP_STACK
+	select HAVE_RUST			if X86_64
 
 config MMU
 	bool