diff --git a/reactos/lib/sdk/crt/except/arm/chkstk_asm.s b/reactos/lib/sdk/crt/except/arm/chkstk_asm.s
new file mode 100644
index 00000000000..f94d76461bc
--- /dev/null
+++ b/reactos/lib/sdk/crt/except/arm/chkstk_asm.s
@@ -0,0 +1,32 @@
+/*
+ * COPYRIGHT:         See COPYING in the top level directory
+ * PROJECT:           ReactOS system libraries
+ * PURPOSE:           Implementation of _chkstk and _alloca_probe
+ * FILE:              lib/sdk/crt/math/amd64/chkstk_asm.s
+ * PROGRAMMER:        Timo Kreuzer (timo.kreuzer@reactos.org)
+ */
+
+/* INCLUDES ******************************************************************/
+
+#include <asm.inc>
+
+/* CODE **********************************************************************/
+.code64
+
+MsgUnimplemented:
+    .ascii "Unimplemented", CR, LF, NUL
+
+FUNC __chkstk
+    .endprolog
+    UNIMPLEMENTED chkstk
+    ret
+ENDFUNC
+
+FUNC __alloca_probe
+    .endprolog
+    UNIMPLEMENTED alloca_probe
+    ret
+ENDFUNC
+
+END
+/* EOF */