Index: graphspell-js/dawg.js
==================================================================
--- graphspell-js/dawg.js
+++ graphspell-js/dawg.js
@@ -374,11 +374,11 @@
             for (let oNode of this.dMinimizedNodes.values()) {
                 sByDic += oNode.convToBytes1(this.nBytesArc, this.nBytesNodeAddress);
             }
         }
         let oJSON = {
-            "sHeader": "/pyfsa/",
+            "sHeader": "/grammalecte-fsa/",
             "sLangCode": this.sLangCode,
             "sLangName": this.sLangName,
             "sDicName": this.sDicName,
             "sFileName": "[none]",
             "sDate": this._getDate(),

Index: graphspell-js/ibdawg.js
==================================================================
--- graphspell-js/ibdawg.js
+++ graphspell-js/ibdawg.js
@@ -117,12 +117,12 @@
         }
         this.byDic = lTemp;
         //this.byDic = new Uint8Array(lTemp);  // not quicker, even slower
         /* end of bug workaround */
 
-        if (!this.sHeader.startsWith("/pyfsa/")) {
-            throw TypeError("# Error. Not a pyfsa binary dictionary. Header: " + this.sHeader);
+        if (!this.sHeader.startsWith("/grammalecte-fsa/")) {
+            throw TypeError("# Error. Not a grammalecte-fsa binary dictionary. Header: " + this.sHeader);
         }
         if (!(this.nCompressionMethod == 1 || this.nCompressionMethod == 2 || this.nCompressionMethod == 3)) {
             throw RangeError("# Error. Unknown dictionary compression method: " + this.nCompressionMethod);
         }
         // <dChar> to get the value of an arc, <dCharVal> to get the char of an arc with its value
@@ -181,11 +181,11 @@
                 `  Address size: ${this.nBytesNodeAddress} bytes,  Arc size: ${this.nBytesArc} bytes\n`;
     }
 
     getJSON () {
         let oJSON = {
-            "sHeader": "/pyfsa/",
+            "sHeader": "/grammalecte-fsa/",
             "sLangCode": this.sLangCode,
             "sLangName": this.sLangName,
             "sDicName": this.sDicName,
             "sFileName": this.sFileName,
             "sDate": this.sDate,

Index: graphspell/dawg.py
==================================================================
--- graphspell/dawg.py
+++ graphspell/dawg.py
@@ -398,11 +398,11 @@
         elif nCompressionMethod == 3:
             byDic = self.oRoot.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset)
             for oNode in self.lSortedNodes:
                 byDic += oNode.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset)
         return {
-            "sHeader": "/pyfsa/",
+            "sHeader": "/grammalecte-fsa/",
             "sLangCode": self.sLangCode,
             "sLangName": self.sLangName,
             "sDicName": self.sDicName,
             "sFileName": self.sFileName,
             "sDate": self._getDate(),
@@ -440,11 +440,11 @@
         """
         Format of the binary indexable dictionary:
         Each section is separated with 4 bytes of \0
         
         - Section Header:
-            /pyfsa/[compression method]
+            /grammalecte-fsa/[compression method]
                 * compression method is an ASCII string
         
         - Section Informations:
             /[lang code]
             /[lang name]
@@ -474,11 +474,11 @@
         self._calculateBinary(nCompressionMethod)
         if not sPathFile.endswith(".bdic"):
             sPathFile += "."+str(nCompressionMethod)+".bdic"
         with open(sPathFile, 'wb') as hDst:
             # header
-            hDst.write("/pyfsa/{}/".format(nCompressionMethod).encode("utf-8"))
+            hDst.write("/grammalecte-fsa/{}/".format(nCompressionMethod).encode("utf-8"))
             hDst.write(b"\0\0\0\0")
             # infos
             sInfo = "{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//".format(self.sLangCode, self.sLangName, self.sDicName, self._getDate(), \
                                                                               self.nChar, self.nBytesArc, self.nBytesNodeAddress, \
                                                                               self.nEntry, self.nNode, self.nArc, self.nAff, self.cStemming)

Index: graphspell/ibdawg.py
==================================================================
--- graphspell/ibdawg.py
+++ graphspell/ibdawg.py
@@ -134,20 +134,20 @@
         self.bOptNumSigle = False
         self.bOptNumAtLast = False
 
     def _initBinary (self):
         "initialize with binary structure file"
-        if self.by[0:7] != b"/pyfsa/":
-            raise TypeError("# Error. Not a pyfsa binary dictionary. Header: {}".format(self.by[0:9]))
-        if not(self.by[7:8] == b"1" or self.by[7:8] == b"2" or self.by[7:8] == b"3"):
-            raise ValueError("# Error. Unknown dictionary version: {}".format(self.by[7:8]))
+        if self.by[0:17] != b"/grammalecte-fsa/":
+            raise TypeError("# Error. Not a grammalecte-fsa binary dictionary. Header: {}".format(self.by[0:9]))
+        if not(self.by[17:18] == b"1" or self.by[17:18] == b"2" or self.by[17:18] == b"3"):
+            raise ValueError("# Error. Unknown dictionary version: {}".format(self.by[17:18]))
         try:
             header, info, values, bdic = self.by.split(b"\0\0\0\0", 3)
         except Exception:
             raise Exception
         
-        self.nCompressionMethod = int(self.by[7:8].decode("utf-8"))
+        self.nCompressionMethod = int(self.by[17:18].decode("utf-8"))
         self.sHeader = header.decode("utf-8")
         self.lArcVal = values.decode("utf-8").split("\t")
         self.nArcVal = len(self.lArcVal)
         self.byDic = bdic
 
@@ -189,11 +189,11 @@
         "write IBDAWG as a JavaScript object in a JavaScript module"
         with open(spfDest, "w", encoding="utf-8", newline="\n") as hDst:
             if bInJSModule:
                 hDst.write('// JavaScript\n// Generated data (do not edit)\n\n"use strict";\n\nconst dictionary = ')
             hDst.write(json.dumps({
-                            "sHeader": "/pyfsa/",
+                            "sHeader": "/grammalecte-fsa/",
                             "sLangCode": self.sLangCode,
                             "sLangName": self.sLangName,
                             "sDicName": self.sDicName,
                             "sFileName": self.sFileName,
                             "sDate": self.sDate,