diff --git a/kdecore/services/kmimetyperepository.cpp b/kdecore/services/kmimetyperepository.cpp

index f56f48e..65860f7 100644

--- a/kdecore/services/kmimetyperepository.cpp

+++ b/kdecore/services/kmimetyperepository.cpp

@@ -58,7 +58,7 @@ KMimeTypeRepository::~KMimeTypeRepository()

 KMimeType::Ptr KMimeTypeRepository::findMimeTypeByName(const QString &_name, KMimeType::FindByNameOption options)

 {

-    QString name = _name;

+    QString name = _name.toLower();

     if (options & KMimeType::ResolveAliases) {

         name = canonicalName(name);

     }