diff --git a/src/com/fsck/k9/preferences/SettingsImporter.java b/src/com/fsck/k9/preferences/SettingsImporter.java
index 02458b919..8d098ce13 100644
--- a/src/com/fsck/k9/preferences/SettingsImporter.java
+++ b/src/com/fsck/k9/preferences/SettingsImporter.java
@@ -1122,7 +1122,7 @@ public class SettingsImporter {
                 }
                 return ConnectionSecurity.valueOf(connectionSecurity);
             } catch (Exception e) {
-                return ConnectionSecurity.NONE;
+                return ConnectionSecurity.SSL_TLS_REQUIRED;
             }
         }
     }