diff --git a/qt6/src/platformtheme/kdeplatformtheme.cpp b/qt6/src/platformtheme/kdeplatformtheme.cpp
index fea04b5..7efafd1 100644
--- a/qt6/src/platformtheme/kdeplatformtheme.cpp
+++ b/qt6/src/platformtheme/kdeplatformtheme.cpp
@@ -551,6 +551,7 @@ bool KdePlatformTheme::checkIfThemeExists(const QString &themePath)
     // QML_IMPORT_PATH is the new one, but QML2_IMPORT_PATH is still used
     checkEnvironmentVariable("QML2_IMPORT_PATH");
     checkEnvironmentVariable("QML_IMPORT_PATH");
+    checkEnvironmentVariable("NIXPKGS_QT6_QML_IMPORT_PATH");
 
     for (const QString &path : moduleSearchPaths) {
         if (QDir(path + themePath).exists()) {