diff --git a/src/insertproxymodel.cpp b/src/insertproxymodel.cpp
index 486b8b4..a6c4b38 100644
--- a/src/insertproxymodel.cpp
+++ b/src/insertproxymodel.cpp
@@ -769,8 +769,6 @@ void InsertProxyModel::sort(int column, Qt::SortOrder order)
 {
     if (!sourceModel())
         return;
-    if (column < 0 || column >= sourceModel()->columnCount())
-        return;
     sourceModel()->sort(column, order);
 }