diff --git a/src/components/views/rooms/MessageComposerInput.js b/src/components/views/rooms/MessageComposerInput.js
index f4befa8c98..5d6b12f339 100644
--- a/src/components/views/rooms/MessageComposerInput.js
+++ b/src/components/views/rooms/MessageComposerInput.js
@@ -501,7 +501,7 @@ export default class MessageComposerInput extends React.Component {
         // when in autocomplete mode and selection changes hide the autocomplete.
         // Selection changes when we enter text so use a heuristic to compare documents without doing it recursively
         if (this.autocomplete.state.completionList.length > 0 && !this.autocomplete.state.hide &&
-            this.state.editorState.document.text !== editorState.document.text &&
+            this.state.editorState.document.text === editorState.document.text &&
             !rangeEquals(this.state.editorState.selection, editorState.selection))
         {
             this.autocomplete.hide();