Index: graphspell-js/ibdawg.js
==================================================================
--- graphspell-js/ibdawg.js
+++ graphspell-js/ibdawg.js
@@ -370,11 +370,11 @@
                 for (let sTail of this._getTails(iAddr)) {
                     oSuggResult.addSugg(sNewWord+sTail);
                 }
                 return;
             }
-            else if (this.isValid(sRemain) && oSuggResult.sWord.toLowerCase().startsWith(sNewWord.toLowerCase())) {
+            else if ( (sNewWord.length + sRemain.length == oSuggResult.sWord.length) && oSuggResult.sWord.toLowerCase().startsWith(sNewWord.toLowerCase()) && this.isValid(sRemain) ) {
                 oSuggResult.addSugg(sNewWord+" "+sRemain);
             }
         }
         if (nDist > oSuggResult.nDistLimit) {
             return;

Index: graphspell/ibdawg.py
==================================================================
--- graphspell/ibdawg.py
+++ graphspell/ibdawg.py
@@ -333,11 +333,11 @@
             if not sRemain:
                 oSuggResult.addSugg(sNewWord, nDeep)
                 for sTail in self._getTails(iAddr):
                     oSuggResult.addSugg(sNewWord+sTail, nDeep)
                 return
-            elif self.isValid(sRemain) and oSuggResult.sWord.lower().startswith(sNewWord.lower()):
+            elif (len(sNewWord) + len(sRemain) == len(oSuggResult.sWord)) and oSuggResult.sWord.lower().startswith(sNewWord.lower()) and self.isValid(sRemain):
                 oSuggResult.addSugg(sNewWord+" "+sRemain)
         if nDist > oSuggResult.nDistLimit:
             return
         cCurrent = sRemain[0:1]
         for cChar, jAddr in self._getCharArcs(iAddr):