diff --git a/rt-thread-version/rt-thread-standard/programming-manual/porting/porting.md b/rt-thread-version/rt-thread-standard/programming-manual/porting/porting.md
index 29c9327b4742ddcef194bce96985525717d80aac..769743889778ec5fba90c1b2640f1e18155e639a 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/porting/porting.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/porting/porting.md
@@ -198,7 +198,7 @@ rt_hw_context_switch_to    PROC
     LDR     r1, =rt_interrupt_to_thread
     STR     r0, [r1]
 
-    ; 设置 from 线程为空，表示不需要从保存 from 的上下文
+    ; 设置 from 线程为空，表示不需要保存 from 的上下文
     LDR     r1, =rt_interrupt_from_thread
     MOV     r0, #0x0
     STR     r0, [r1]