diff --git a/src/main/java/org/olat/modules/co/ContactForm.java b/src/main/java/org/olat/modules/co/ContactForm.java
index 21ac85d41d9b618cb0ecdb91fb35e735b7f972d7..b1f0ad06cb80cad008ca9dc926bea1c253708022 100644
--- a/src/main/java/org/olat/modules/co/ContactForm.java
+++ b/src/main/java/org/olat/modules/co/ContactForm.java
@@ -46,7 +46,6 @@ import org.olat.core.gui.components.form.flexible.impl.Form;
 import org.olat.core.gui.components.form.flexible.impl.FormBasicController;
 import org.olat.core.gui.components.form.flexible.impl.FormEvent;
 import org.olat.core.gui.components.form.flexible.impl.FormLayoutContainer;
-import org.olat.core.gui.components.form.flexible.impl.elements.FileElementEvent;
 import org.olat.core.gui.components.link.Link;
 import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.Event;
diff --git a/src/main/resources/database/oracle/alter_11_5_x_to_12_0_0.sql b/src/main/resources/database/oracle/alter_11_5_x_to_12_0_0.sql
index a90f38a26d0a47e3dba87bbbb95d19d4e21d8fdb..51f20182e3f6158db0647bf3b70b9787e2f61b45 100644
--- a/src/main/resources/database/oracle/alter_11_5_x_to_12_0_0.sql
+++ b/src/main/resources/database/oracle/alter_11_5_x_to_12_0_0.sql
@@ -210,7 +210,7 @@ create index idx_lec_audit_entry_idx on o_lecture_block_audit_log(fk_entry);
 create index idx_lec_audit_ident_idx on o_lecture_block_audit_log(fk_identity);
 
 
-alter table o_rem_reminder add column r_email_subject varchar(255);
+alter table o_rem_reminder add r_email_subject varchar2(255 char);
 update o_rem_reminder set r_email_subject=r_description;