diff --git a/theme/base/css/display.css b/theme/base/css/display.css
index 380975e324..52f97f6b12 100644
--- a/theme/base/css/display.css
+++ b/theme/base/css/display.css
@@ -1490,6 +1490,7 @@ text-align:center;
 }
 .aside .tag-cloud {
 font-size:0.8em;
+word-wrap:break-word;
 }
 .tag-cloud li {
 display:inline;