diff --git a/package/dtui/Config.in b/package/dtui/Config.in
index 65d51df7d5..7056cbdb08 100644
--- a/package/dtui/Config.in
+++ b/package/dtui/Config.in
@@ -3,6 +3,8 @@ config BR2_PACKAGE_DTUI
 	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus
 	depends on BR2_USE_MMU # dbus
+	# tui-textarea unconditionally uses AtomicU64
+	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_HAS_ATOMIC_U64
 	select BR2_PACKAGE_DBUS # runtime
 	select BR2_PACKAGE_HOST_RUSTC
 	help
@@ -14,5 +16,6 @@ config BR2_PACKAGE_DTUI
 
 comment "dtui needs a toolchain w/ threads"
 	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_HAS_ATOMIC_U64
 	depends on BR2_USE_MMU
 	depends on !BR2_TOOLCHAIN_HAS_THREADS