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-rw-r--r--framework/Web/UI/TControl.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/framework/Web/UI/TControl.php b/framework/Web/UI/TControl.php
index 7ca37a00..1aabb2a5 100644
--- a/framework/Web/UI/TControl.php
+++ b/framework/Web/UI/TControl.php
@@ -73,7 +73,7 @@ class TControl extends TApplicationComponent implements IRenderable, IBindable
/**
* format of control ID
*/
- const ID_FORMAT='/^\\w*$/';
+ const ID_FORMAT='/^[a-zA-Z_]\\w*$/';
/**
* separator char between IDs in a UniqueID
*/