diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 0e6cb7f..f7b2aa6 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1794,6 +1794,7 @@
 
     case SSTATE_INTERNED_IMMORTAL:
         Py_FatalError("Immortal interned string died.");
+        /* fall through */
 
     default:
         Py_FatalError("Inconsistent interned string state.");
@@ -6778,7 +6779,7 @@
             case _Py_ERROR_REPLACE:
                 memset(str, '?', collend - collstart);
                 str += (collend - collstart);
-                /* fall through ignore error handler */
+                /* fall through */
             case _Py_ERROR_IGNORE:
                 pos = collend;
                 break;
@@ -6817,7 +6818,7 @@
                     break;
                 collstart = pos;
                 assert(collstart != collend);
-                /* fallback to general error handling */
+                /* fall through */
 
             default:
                 rep = unicode_encode_call_errorhandler(errors, &error_handler_obj,