diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
index be8acd5efd97..331aa2d1f3f5 100644
--- a/arch/um/include/sysdep-x86_64/ptrace.h
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -227,7 +227,7 @@ struct syscall_args {
                         panic("Bad register in UPT_SET : %d\n", reg);  \
 			break; \
                 } \
-                val; \
+                __upt_val; \
         })
 
 #define UPT_SET_SYSCALL_RETURN(r, res) \