diff --git a/src/Annotator.scss b/src/Annotator.scss
index 0d991e65b..dbb6854ec 100644
--- a/src/Annotator.scss
+++ b/src/Annotator.scss
@@ -210,6 +210,7 @@
 
         .ba-annotation-comment-text {
             margin-bottom: 0;
+            word-break: break-word;
 
             & p {
                 margin: 0;