diff --git a/scss/elements/_duplicatesMergePane.scss b/scss/elements/_duplicatesMergePane.scss
index 37eaac046a..7f2bc53eaf 100644
--- a/scss/elements/_duplicatesMergePane.scss
+++ b/scss/elements/_duplicatesMergePane.scss
@@ -4,6 +4,7 @@ duplicates-merge-pane {
 
 	groupbox {
 		margin: 8px 0 0 0;
+		min-height: 0;
 	}
 
 	#zotero-duplicates-merge-button