diff --git a/syntax/python.vim b/syntax/python.vim
index 8e25a7f..ba34666 100644
--- a/syntax/python.vim
+++ b/syntax/python.vim
@@ -179,7 +179,7 @@ endif
 "
 
 syn match   pythonDecorator	"@" display nextgroup=pythonDottedName skipwhite
-syn match   pythonDottedName "[a-zA-Z_][a-zA-Z0-9_]*\%(\.[a-zA-Z_][a-zA-Z0-9_]*\)*" display contained
+syn match   pythonDottedName "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*\%(\.\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*\)*" display contained
 syn match   pythonDot        "\." display containedin=pythonDottedName
 
 "
diff --git a/test.py b/test.py
index 0ee30a2..671d289 100644
--- a/test.py
+++ b/test.py
@@ -51,6 +51,7 @@ RuntimeWarning FutureWarning ImportWarning UnicodeWarning
 
 @ decoratorname
 @ object.__init__(arg1, arg2)
+@ декоратор.décorateur
 
 # Numbers