diff --git a/src/musredit_qt5/musredit/PAdmin.cpp b/src/musredit_qt5/musredit/PAdmin.cpp
index 82b8399e..0d85abe5 100644
--- a/src/musredit_qt5/musredit/PAdmin.cpp
+++ b/src/musredit_qt5/musredit/PAdmin.cpp
@@ -797,6 +797,11 @@ PAdmin::PAdmin() : QObject()
     msg += "> MUSRFITPATH\n";
     sysVarMissing = true;
   }
+  path = procEnv.value("DKS", "");
+  if (path.isEmpty()) {
+    msg += "> DKS\n";
+    sysVarMissing = true;
+  }
   if (sysVarMissing) {
     msg += "Please set this/these system variables.";
     QMessageBox::warning(0, "WARNING", msg);