diff --git a/spellchecker/src/com/intellij/spellchecker/grazie/async/WordListLoader.kt b/spellchecker/src/com/intellij/spellchecker/grazie/async/WordListLoader.kt
index da652b8ed36c..e7513dd82d6b 100644
--- a/spellchecker/src/com/intellij/spellchecker/grazie/async/WordListLoader.kt
+++ b/spellchecker/src/com/intellij/spellchecker/grazie/async/WordListLoader.kt
@@ -69,12 +69,12 @@ internal class WordListLoader(private val project: Project, private val coroutin
   }
 
   private fun readAll(loader: Loader): Set<String> {
-    val set = CollectionFactory.createSmallMemoryFootprintSet<String>()
+    val words = mutableListOf<String>()
     loader.load {
       ProgressManager.checkCanceled()
-      set.add(it)
+      words.add(it)
     }
-    return set
+    return CollectionFactory.createSmallMemoryFootprintSet(words)
   }
 
   private fun queueWordListLoad(loader: Loader, consumer: (String, WordList) -> Unit) {
diff --git a/spellchecker/src/com/intellij/spellchecker/grazie/dictionary/SimpleWordList.kt b/spellchecker/src/com/intellij/spellchecker/grazie/dictionary/SimpleWordList.kt
index cddd9ca7ab5a..c43f5ec074d6 100644
--- a/spellchecker/src/com/intellij/spellchecker/grazie/dictionary/SimpleWordList.kt
+++ b/spellchecker/src/com/intellij/spellchecker/grazie/dictionary/SimpleWordList.kt
@@ -14,7 +14,7 @@ internal class SimpleWordList(private val container: Set<String>) : WordList {
   private val invariants = buildInvariants(container)
 
   private fun buildInvariants(container: Set<String>): Set<String> {
-    val result = CollectionFactory.createSmallMemoryFootprintSet<String>()
+    val result = CollectionFactory.createSmallMemoryFootprintSet<String>(container.size)
     for (entry in container) {
       ProgressManager.checkCanceled()
       result.add(entry.lowercase())