diff --git a/src/corelib/mimetypes/qmimeglobpattern.cpp b/src/corelib/mimetypes/qmimeglobpattern.cpp
index 5205595943a..94be5385f33 100644
--- a/src/corelib/mimetypes/qmimeglobpattern.cpp
+++ b/src/corelib/mimetypes/qmimeglobpattern.cpp
@@ -182,10 +182,8 @@ void QMimeAllGlobPatterns::addGlob(const QMimeGlobPattern &glob)
 
 void QMimeAllGlobPatterns::removeMimeType(const QString &mimeType)
 {
-    QMutableHashIterator<QString, QStringList> it(m_fastPatterns);
-    while (it.hasNext()) {
-        it.next().value().removeAll(mimeType);
-    }
+    for (auto &x : m_fastPatterns)
+        x.removeAll(mimeType);
     m_highWeightGlobs.removeMimeType(mimeType);
     m_lowWeightGlobs.removeMimeType(mimeType);
 }
diff --git a/src/corelib/mimetypes/qmimeglobpattern_p.h b/src/corelib/mimetypes/qmimeglobpattern_p.h
index 7b4ecd2f6a7..e4c74ff7fa2 100644
--- a/src/corelib/mimetypes/qmimeglobpattern_p.h
+++ b/src/corelib/mimetypes/qmimeglobpattern_p.h
@@ -130,11 +130,10 @@ public:
      */
     void removeMimeType(const QString &mimeType)
     {
-        QMutableListIterator<QMimeGlobPattern> it(*this);
-        while (it.hasNext()) {
-            if (it.next().mimeType() == mimeType)
-                it.remove();
-        }
+        auto isMimeTypeEqual = [&mimeType](const QMimeGlobPattern &pattern) {
+            return pattern.mimeType() == mimeType;
+        };
+        erase(std::remove_if(begin(), end(), isMimeTypeEqual), end());
     }
 
     void match(QMimeGlobMatchResult &result, const QString &fileName) const;