@@ -133,12 +133,12 @@
             self._getArcs = self._getArcs3
             self._writeNodes = self._writeNodes3
         else:
             raise ValueError("  # Error: unknown code: {}".format(self.nCompressionMethod))
 
-        self.bOptNumSigle = False
-        self.bOptNumAtLast = False
+        self.bAcronymValid = True
+        self.bNumAtLastValid = False
 
     def _initBinary (self):
         "initialize with binary structure file"
         if self.by[0:17] != b"/grammalecte-fsa/":
             raise TypeError("# Error. Not a grammalecte-fsa binary dictionary. Header: {}".format(self.by[0:9]))
@@ -247,11 +247,11 @@
         if sWord[0:1].isupper():
             if len(sWord) > 1:
                 if sWord.istitle():
                     return self.lookup(sWord.lower())
                 if sWord.isupper():
-                    if self.bOptNumSigle:
+                    if self.bAcronymValid:
                         return True
                     return self.lookup(sWord.lower()) or self.lookup(sWord.capitalize())
                 return self.lookup(sWord[:1].lower() + sWord[1:])
             else:
                 return self.lookup(sWord.lower())