diff --git a/Operating Systems.md b/Operating Systems.md
index 6dc4588..91d83b1 100644
--- a/Operating Systems.md	
+++ b/Operating Systems.md	
@@ -110,7 +110,7 @@ wait操作：执行wait操作的进程进入条件变量链末尾，唤醒紧急
 >    	  P(empty);
 > 	  P(mutex);
 > 
->    		// 生产者进行生产
+>  // 生产者进行生产
 >    	
 >    	  V(mutex);
 >    	  V(full);