diff --git a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/web/client/application/detailviewers/WellContentDialog.java b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/web/client/application/detailviewers/WellContentDialog.java
index e707cb3a7633be25485565ebad5c2356b447d0b0..371ea3154992b9dcd136d95abfc2e227cc4bff22 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/web/client/application/detailviewers/WellContentDialog.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/web/client/application/detailviewers/WellContentDialog.java
@@ -80,7 +80,7 @@ public class WellContentDialog extends Dialog
             dialogHeight = imgH * images.getTileRowsNum() + 200;
         } else
         {
-            dialogWidth = 250;
+            dialogWidth = 300;
             dialogHeight = 160;
         }
         String title = "Well Content: " + wellData.getWellContentDescription();