diff --git a/include/xy.h b/include/xy.h
index 3c2f5ba..ed3f5eb 100644
--- a/include/xy.h
+++ b/include/xy.h
@@ -82,9 +82,9 @@ void br ()                   { puts ("");}
 
 #define assert_str(a, b) assert (xy_streql ((a), (b)))
 
-#define xy_unsupport   assert(!"Unsuppoted")
-#define xy_unimplement assert(!"Unimplemented temporarily")
-#define xy_unreach     assert(!"This code shouldn't be reached")
+#define xy_unsupported()    assert(!"Unsuppoted")
+#define xy_unimplemented()  assert(!"Unimplemented temporarily")
+#define xy_unreached()      assert(!"This code shouldn't be reached")
 
 #define xy_arylen(x) (sizeof (x) / sizeof (x[0]))
 
diff --git a/src/chsrc-main.c b/src/chsrc-main.c
index 23f7965..2577a10 100644
--- a/src/chsrc-main.c
+++ b/src/chsrc-main.c
@@ -371,7 +371,7 @@ cli_print_target_features (Feature_t f, const char *input_target_name)
       printf (" %s%s\n\n   %s\n", bdgreen(HalfYesMark), purple(locally_msg), f.cap_locally_explain);br();
       break;
     default:
-      xy_unreach;
+      xy_unreached();
     }
   }
 
diff --git a/src/framework/core.c b/src/framework/core.c
index a579aea..4463155 100644
--- a/src/framework/core.c
+++ b/src/framework/core.c
@@ -1011,7 +1011,7 @@ chsrc_conclude (Source_t *source)
   else
     {
       fprintf (stderr, "chsrc: Wrong change type: %d\n", ProgMode_ChgType);
-      xy_unreach;
+      xy_unreached();
     }
 }
 
@@ -1217,7 +1217,7 @@ chsrc_prepend_to_file (const char *str, const char *filename)
   char *cmd = NULL;
   if (xy_on_windows)
     {
-      xy_unimplement;
+      xy_unimplemented();
     }
   else
     {
diff --git a/test/xy.c b/test/xy.c
index f6d4cac..ef393bb 100644
--- a/test/xy.c
+++ b/test/xy.c
@@ -103,8 +103,8 @@ main (int argc, char const *argv[])
 
   xy_succ ("测试完成", "测试全部通过");
 
-  // xy_unimplement;
-  // xy_unsupport;
-  // xy_unreach;
+  // xy_unimplemented();
+  // xy_unsupported();
+  // xy_unreached();
   return 0;
 }