diff --git a/src/kits/interface/MenuField.cpp b/src/kits/interface/MenuField.cpp
index 3665ff631c..1a5187ff29 100644
--- a/src/kits/interface/MenuField.cpp
+++ b/src/kits/interface/MenuField.cpp
@@ -430,6 +430,11 @@ BMenuField::MouseDown(BPoint where)
 void
 BMenuField::KeyDown(const char* bytes, int32 numBytes)
 {
+	if (numBytes != 1) {
+		BView::KeyDown(bytes, numBytes);
+		return;
+	}
+
 	switch (bytes[0]) {
 		case B_SPACE:
 		case B_RIGHT_ARROW: