diff --git a/src/core/atcore.cpp b/src/core/atcore.cpp
--- a/src/core/atcore.cpp
+++ b/src/core/atcore.cpp
@@ -611,27 +611,13 @@
 QMap<QString, QString> AtCore::findFirmwarePlugins(const QString &path)
 {
     QMap<QString, QString> detectedPlugins;
-    QStringList files = QDir(path).entryList(QDir::Files);
-    for (const QString &f : files) {
+    for (const QString &f : QDir(path).entryList({AtCoreDirectories::pluginExtFilter}, QDir::Files)) {
         QString file = f;
-#if defined(Q_OS_WIN)
-        if (file.endsWith(QStringLiteral(".dll")))
-#elif defined(Q_OS_MAC)
-        if (file.endsWith(QStringLiteral(".dylib")))
-#else
-        if (file.endsWith(QStringLiteral(".so")))
-#endif
-            file = file.split(QChar::fromLatin1('.')).at(0);
-        else {
-            continue;
-        }
+        file = file.split(QStringLiteral(".")).at(0).toLower().simplified();
         if (file.startsWith(QStringLiteral("lib"))) {
             file = file.remove(QStringLiteral("lib"));
         }
-        file = file.toLower().simplified();
-        QString pluginString = path;
-        pluginString.append(QChar::fromLatin1('/'));
-        pluginString.append(f);
+        QString pluginString = QStringLiteral("%1/%2").arg(path, f);
         detectedPlugins[file] = pluginString;
         qCDebug(ATCORE_PLUGIN) << QStringLiteral("Plugin:[%1]=%2").arg(file, pluginString);
     }
diff --git a/src/core/atcore_default_folders.h.in b/src/core/atcore_default_folders.h.in
--- a/src/core/atcore_default_folders.h.in
+++ b/src/core/atcore_default_folders.h.in
@@ -29,4 +29,12 @@
         , QStringLiteral("@KDE_INSTALL_PLUGINDIR@/AtCore")
         , QStringLiteral("@CMAKE_CURRENT_BINARY_DIR@/../plugins")
     };
+    const QString pluginExtFilter =
+        #if defined(Q_OS_WIN)
+            QStringLiteral("*.dll");
+        #elif defined(Q_OS_MAC)
+            QStringLiteral("*.dylib");
+        #else
+            QStringLiteral("*.so");
+        #endif
 }
diff --git a/src/widgets/profilemanager.cpp b/src/widgets/profilemanager.cpp
--- a/src/widgets/profilemanager.cpp
+++ b/src/widgets/profilemanager.cpp
@@ -313,23 +313,11 @@
 QStringList ProfileManager::firmwaresInPath(const QString &path)
 {
     QStringList firmwares;
-    QStringList files = QDir(path).entryList(QDir::Files);
-    for (QString file : files) {
-#if defined(Q_OS_WIN)
-        if (file.endsWith(QStringLiteral(".dll")))
-#elif defined(Q_OS_MAC)
-        if (file.endsWith(QStringLiteral(".dylib")))
-#else
-        if (file.endsWith(QStringLiteral(".so")))
-#endif
-            file = file.split(QChar::fromLatin1('.')).at(0);
-        else {
-            continue;
-        }
+    for (QString file : QDir(path).entryList({AtCoreDirectories::pluginExtFilter}, QDir::Files)) {
+        file = file.split(QStringLiteral(".")).at(0).toLower().simplified();
         if (file.startsWith(QStringLiteral("lib"))) {
             file = file.remove(QStringLiteral("lib"));
         }
-        file = file.toLower().simplified();
         firmwares.append(file);
     }
     return firmwares;