diff --git a/src/driver/simple_display.cpp b/src/driver/simple_display.cpp
index 415a2c913..bce4f24d0 100644
--- a/src/driver/simple_display.cpp
+++ b/src/driver/simple_display.cpp
@@ -150,7 +150,7 @@ static void setlcdparam(void)
 
 static void replace_umlauts(std::string __attribute__((unused)) &s)
 {
-#if BOXMODEL_HD51 || BOXMODEL_BRE2ZE4K || BOXMODEL_H7 || BOXMODEL_VUSOLO4K || BOXMODEL_VUDUO4KSE || BOXMODEL_VUDUO4K || BOXMODEL_VUULTIMO4K || BOXMODEL_VUUNO4KSE || BOXMODEL_E4HDULTRA || BOXMODEL_VUUNO || BOXMODEL_VUDUO2 || BOXMODEL_VUULTIMO
+#if BOXMODEL_HD51 || BOXMODEL_BRE2ZE4K || BOXMODEL_H7 || BOXMODEL_VUSOLO4K || BOXMODEL_VUDUO4KSE || BOXMODEL_VUDUO4K || BOXMODEL_VUULTIMO4K || BOXMODEL_VUUNO4KSE || BOXMODEL_E4HDULTRA || BOXMODEL_VUUNO || BOXMODEL_VUDUO2 || BOXMODEL_VUULTIMO || BOXMODEL_DM820 || BOXMODEL_DM7080 || BOXMODEL_DM900 || BOXMODEL_DM920 || BOXMODEL_DM8000
 	return;
 #else
 	/* this is crude, it just replaces ÄÖÜ with AOU since the display can't show them anyway */