diff --git a/libkcups/PrinterSortFilterModel.cpp b/libkcups/PrinterSortFilterModel.cpp
--- a/libkcups/PrinterSortFilterModel.cpp
+++ b/libkcups/PrinterSortFilterModel.cpp
@@ -27,6 +27,7 @@
 {
     setDynamicSortFilter(true);
     setSortCaseSensitivity(Qt::CaseInsensitive);
+    setFilterCaseSensitivity(Qt::CaseInsensitive);
     sort(0);
 
     connect(this, &PrinterSortFilterModel::rowsInserted, this, &PrinterSortFilterModel::countChanged);