diff --git a/tools/bin/td b/tools/bin/td
index 66cb796..dad09c6 100644
--- a/tools/bin/td
+++ b/tools/bin/td
@@ -244,7 +244,7 @@ recipe_patch() {
 
     # If the user has not set their DISPLAY_NAME, try to deduce it
     # from their system.
-    if [ -z "$DISPLAY_NAME" ]; then
+    if [ -z "$DISPLAY_NAME" ] && which getent > /dev/null 2>&1; then
         DISPLAY_NAME=$(getent passwd "$USER" | cut -d ':' -f 5 | cut -d ',' -f 1)
     fi