diff --git a/ng2-components/ng2-alfresco-upload/src/components/file-uploading-dialog.component.css b/ng2-components/ng2-alfresco-upload/src/components/file-uploading-dialog.component.css
index 06ff3fc3fc..28587f9046 100644
--- a/ng2-components/ng2-alfresco-upload/src/components/file-uploading-dialog.component.css
+++ b/ng2-components/ng2-alfresco-upload/src/components/file-uploading-dialog.component.css
@@ -83,6 +83,12 @@
     opacity: 1.0;
 }
 
+.minimize-button {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
 :host .file-dialog .header .minimize-button {
     cursor: pointer;
     float: left;