diff --git a/ext/phar/tests/gh14603.phpt b/ext/phar/tests/gh14603.phpt
new file mode 100644
index 00000000000..95b9fa30fd5
Binary files /dev/null and b/ext/phar/tests/gh14603.phpt differ
diff --git a/ext/phar/zip.c b/ext/phar/zip.c
index f7d927b62a3..9faf6054aff 100644
--- a/ext/phar/zip.c
+++ b/ext/phar/zip.c
@@ -800,7 +800,7 @@ foundit:
 				}
 			}
 
-			zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), actual_alias, mydata->alias_len, mydata);
+			zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len, mydata);
 			mydata->alias = pestrndup(alias, alias_len, mydata->is_persistent);
 			mydata->alias_len = alias_len;
 		} else {