diff --git a/keditfiletype/filetypedetails.cpp b/keditfiletype/filetypedetails.cpp
--- a/keditfiletype/filetypedetails.cpp
+++ b/keditfiletype/filetypedetails.cpp
@@ -181,7 +181,10 @@
 
 void FileTypeDetails::updateRemoveButton()
 {
-    removeExtButton->setEnabled(extensionLB->count()>0);
+    // The "main" glob pattern (the first glob pattern in the system-wide mime .xml file)
+    // will always be re-added by QMimeDatabase (see QMimeBinaryProvider::loadMimeTypePrivate()
+    // in qtbase upstream), even if the user the removes it; so no point removing it to begin with.
+    removeExtButton->setEnabled(extensionLB->currentRow() != 0);
 }
 
 void FileTypeDetails::updateIcon(const QString &icon)
@@ -351,7 +354,7 @@
 
 void FileTypeDetails::enableExtButtons()
 {
-  removeExtButton->setEnabled(true);
+    updateRemoveButton();
 }
 
 void FileTypeDetails::refresh()
diff --git a/keditfiletype/mimetypedata.cpp b/keditfiletype/mimetypedata.cpp
--- a/keditfiletype/mimetypedata.cpp
+++ b/keditfiletype/mimetypedata.cpp
@@ -273,7 +273,6 @@
     }
 
     QStringList storedPatterns = m_mimetype.globPatterns();
-    storedPatterns.sort(); // see ctor
     if ( storedPatterns != m_patterns) {
         qDebug() << "Mimetype Patterns Dirty: old=" << storedPatterns
                  << "m_patterns=" << m_patterns;
@@ -517,11 +516,6 @@
 void MimeTypeData::setPatterns(const QStringList &p)
 {
     m_patterns = p;
-    // Sort them, since update-mime-database doesn't respect order (order of globs file != order of xml),
-    // and this code says things like if (m_mimetype.patterns() == m_patterns).
-    // We could also sort in KMimeType::setPatterns but this would just slow down the
-    // normal use case (anything else than this KCM) for no good reason.
-    m_patterns.sort();
 }
 
 bool MimeTypeData::matchesFilter(const QString& filter) const
diff --git a/keditfiletype/tests/filetypestest.cpp b/keditfiletype/tests/filetypestest.cpp
--- a/keditfiletype/tests/filetypestest.cpp
+++ b/keditfiletype/tests/filetypestest.cpp
@@ -145,14 +145,13 @@
         QCOMPARE(data.minorType(), QStringLiteral("plain"));
         QVERIFY(!data.isMeta());
         QStringList patterns = data.patterns();
-        QVERIFY(patterns.contains(QStringLiteral("*.txt")));
+        QVERIFY(patterns.contains(QStringLiteral("*.inf")));
         QVERIFY(!patterns.contains(QStringLiteral("*.toto")));
 
         // When the user changes the patterns
         const QStringList origPatterns = patterns;
-        patterns.removeAll(QStringLiteral("*.txt"));
+        patterns.removeAll(QStringLiteral("*.inf"));
         patterns.append(QStringLiteral("*.toto")); // yes, a french guy wrote this, as you can see
-        patterns.sort(); // for future comparisons
         QVERIFY(!data.isDirty());
         data.setPatterns(patterns);
         QVERIFY(data.isDirty());
@@ -166,7 +165,6 @@
         QCOMPARE(data.patterns(), patterns);
         // Check what's in QMimeDatabase
         QStringList newPatterns = db.mimeTypeForName(QStringLiteral("text/plain")).globPatterns();
-        newPatterns.sort();
         QCOMPARE(newPatterns, patterns);
         QVERIFY(!data.isDirty());
 
@@ -177,7 +175,6 @@
         MimeTypeWriter::runUpdateMimeDatabase();
         // Check what's in QMimeDatabase
         newPatterns = db.mimeTypeForName(QStringLiteral("text/plain")).globPatterns();
-        newPatterns.sort();
         QCOMPARE(newPatterns, origPatterns);
     }
 
@@ -292,7 +289,7 @@
         QMimeType mime = db.mimeTypeForName(mimeTypeName);
         QVERIFY(mime.isValid());
         QCOMPARE(mime.comment(), QStringLiteral("Fake MimeType"));
-        QCOMPARE(mime.globPatterns(), patterns); // must sort them if more than one
+        QCOMPARE(mime.globPatterns(), patterns);
 
         // Testcase for the shaman.xml bug
         QCOMPARE(db.mimeTypeForFile(QStringLiteral("/whatever/foo.pkg.tar.gz")).name(), QStringLiteral("fake/unit-test-fake-mimetype"));