diff --git a/src/kitemviews/kfileitemmodelrolesupdater.cpp b/src/kitemviews/kfileitemmodelrolesupdater.cpp
--- a/src/kitemviews/kfileitemmodelrolesupdater.cpp
+++ b/src/kitemviews/kfileitemmodelrolesupdater.cpp
@@ -495,14 +495,9 @@
 
     QPixmap scaledPixmap = pixmap;
 
-    const QString mimeType = item.mimetype();
-    const int slashIndex = mimeType.indexOf(QLatin1Char('/'));
-    const bool isFontPreview = mimeType.rightRef(slashIndex).contains(QLatin1String("font"));
-    const bool isFolderPreview = item.isDir();
-    const bool isWindowsExePreview = mimeType == QLatin1String("application/x-ms-dos-executable") ||
-                                     mimeType == QLatin1String("application/x-msdownload");
-
-    if (!isFolderPreview && !isFontPreview && !isWindowsExePreview) {
+    if (!pixmap.hasAlpha()
+        && m_iconSize.width()  > KIconLoader::SizeSmallMedium
+        && m_iconSize.height() > KIconLoader::SizeSmallMedium) {
         if (m_enlargeSmallPreviews) {
             KPixmapModifier::applyFrame(scaledPixmap, m_iconSize);
         } else {