--- a/src/runtime/GNUmakefile
+++ b/src/runtime/GNUmakefile
@@ -16,7 +16,6 @@
 # Config file
 CFLAGS =  -g -Wall -O3
 ASFLAGS = $(CFLAGS)
-DEPEND_FLAGS =
 CPPFLAGS = -I.
 
 # Some of these things might be Config-dependent in future versions,