diff --git a/arpa/parsers/quick.py b/arpa/parsers/quick.py
index e379e25..58e412a 100644
--- a/arpa/parsers/quick.py
+++ b/arpa/parsers/quick.py
@@ -18,7 +18,7 @@ class State(Enum):
     re_entry = re.compile('^(-?\\d+(\\.\\d+)?([eE]-?\\d+)?)'
                           '\t'
                           '(\\S+( \\S+)*)'
-                          '(\t(-?\\d+(\\.\\d+)?)([eE]-?\\d+)?)?$')
+                          '(\t((-?\\d+(\\.\\d+)?)([eE]-?\\d+)?))?$')
 
     def __init__(self, model):
         self.ModelClass = model