diff --git a/resources/assets/javascripts/lib/fullcalendar.js b/resources/assets/javascripts/lib/fullcalendar.js
index 5b7d03259e0fe5f59ea0e076b3bda9aa6af1b1d6..c4b0edf5bbdd078cf556f6e00321bb26510b98ba 100644
--- a/resources/assets/javascripts/lib/fullcalendar.js
+++ b/resources/assets/javascripts/lib/fullcalendar.js
@@ -263,7 +263,8 @@ class Fullcalendar
                                 resource_id: drop_resource_id,
                                 begin: this.toRFC3339String(info.event.start.setHours(0, 0, 0)),
                                 end: this.toRFC3339String(info.event.start.setHours(23, 59, 59))
-                            }
+                            },
+                            size: 'auto'
                         }
                     );
                 } else {
@@ -289,7 +290,8 @@ class Fullcalendar
                                 resource_id: drop_resource_id,
                                 begin: this.toRFC3339String(info.event.start),
                                 end: this.toRFC3339String(real_end)
-                            }
+                            },
+                            size: 'auto'
                         }
                     );
                 } else {
@@ -312,7 +314,8 @@ class Fullcalendar
                                 resource_id: drop_resource_id,
                                 begin: this.toRFC3339String(info.event.start),
                                 end: this.toRFC3339String(info.event.end)
-                            }
+                            },
+                            size: 'auto'
                         }
                     );
                 } else {