Index: graphspell-js/ibdawg.js
==================================================================
--- graphspell-js/ibdawg.js
+++ graphspell-js/ibdawg.js
@@ -224,11 +224,11 @@
         }
         if (sToken.includes("-")) {
             if (sToken.gl_count("-") > 4) {
                 return true;
             }
-            return sToken.split("-").every(sWord  =>  this.isValid(sWord)); 
+            return sToken.split("-").every(sWord  =>  this.isValid(sWord));
         }
         if (sToken.includes(".") || sToken.includes("·")) {
             return true;
         }
         return false;
@@ -237,12 +237,12 @@
     isValid (sWord) {
         // checks if sWord is valid (different casing tested if the first letter is a capital)
         if (!sWord) {
             return null;
         }
-        if (sWord.includes("’")) { // ugly hack
-            sWord = sWord.replace("’", "'");
+        if (sWord.includes("'")) { // ugly hack
+            sWord = sWord.replace("'", "’");
         }
         if (this.lookup(sWord)) {
             return true;
         }
         if (sWord.charAt(0).gl_isUpperCase()) {
@@ -482,11 +482,11 @@
                         }
                     }
                 }
             }
         }
-    }            
+    }
 
     _morph1 (sWord) {
         // returns morphologies of sWord
         let iAddr = 0;
         for (let c of sWord) {
@@ -504,11 +504,11 @@
             while (!(nRawArc & this._lastArcMask)) {
                 let iEndArcAddr = iAddr + this.nBytesArc;
                 nRawArc = this._convBytesToInteger(this.byDic.slice(iAddr, iEndArcAddr));
                 let nArc = nRawArc & this._arcMask;
                 if (nArc > this.nChar) {
-                    // This value is not a char, this is a stemming code 
+                    // This value is not a char, this is a stemming code
                     let sStem = ">" + this.funcStemming(sWord, this.lArcVal[nArc]);
                     // Now , we go to the next node and retrieve all following arcs values, all of them are tags
                     let iAddr2 = this._convBytesToInteger(this.byDic.slice(iEndArcAddr, iEndArcAddr+this.nBytesNodeAddress));
                     let nRawArc2 = 0;
                     while (!(nRawArc2 & this._lastArcMask)) {
@@ -543,11 +543,11 @@
             while (!(nRawArc & this._lastArcMask)) {
                 let iEndArcAddr = iAddr + this.nBytesArc;
                 nRawArc = this._convBytesToInteger(this.byDic.slice(iAddr, iEndArcAddr));
                 let nArc = nRawArc & this._arcMask;
                 if (nArc > this.nChar) {
-                    // This value is not a char, this is a stemming code 
+                    // This value is not a char, this is a stemming code
                     l.push(this.funcStemming(sWord, this.lArcVal[nArc]));
                 }
                 iAddr = iEndArcAddr + this.nBytesNodeAddress;
             }
             return l;
@@ -559,11 +559,11 @@
         // looks if nVal is an arc at the node at iAddr, if yes, returns address of next node else None
         while (true) {
             let iEndArcAddr = iAddr+this.nBytesArc;
             let nRawArc = this._convBytesToInteger(this.byDic.slice(iAddr, iEndArcAddr));
             if (nVal == (nRawArc & this._arcMask)) {
-                // the value we are looking for 
+                // the value we are looking for
                 // we return the address of the next node
                 return this._convBytesToInteger(this.byDic.slice(iEndArcAddr, iEndArcAddr+this.nBytesNodeAddress));
             }
             else {
                 // value not found

Index: graphspell/ibdawg.py
==================================================================
--- graphspell/ibdawg.py
+++ graphspell/ibdawg.py
@@ -247,12 +247,12 @@
 
     def isValid (self, sWord):
         "checks if <sWord> is valid (different casing tested if the first letter is a capital)"
         if not sWord:
             return None
-        if "’" in sWord: # ugly hack
-            sWord = sWord.replace("’", "'")
+        if "'" in sWord: # ugly hack
+            sWord = sWord.replace("'", "’")
         if self.lookup(sWord):
             return True
         if sWord[0:1].isupper():
             if len(sWord) > 1:
                 if sWord.istitle():