diff --git a/firmware/Makefile b/firmware/Makefile
index 6212493..7f4dc49 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -57,6 +57,6 @@
 targets := $(patsubst $(obj)/%,%, \
                                 $(shell find $(obj) -name \*.gen.S 2>/dev/null))
 
-# just to build a built-in.o. Otherwise compilation fails when no devicetree is
-# created.
+# just to build a built-in.o. Otherwise compilation fails when no
+# firmware is built.
 obj- += dummy.o