diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 7160d569eea..81d51d961a3 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -186,12 +186,6 @@ endif
 
 ifeq ($(CONFIG_SIM_SPI_LINUX),y)
   HOSTSRCS += up_spilinux.c
-
-  up_spilinux.c: config.h
-
-  config.h: $(TOPDIR)/include/nuttx/config.h
-	@echo "CP:  $<"
-	$(Q) cp $< $@
 endif
 
 ifeq ($(CONFIG_RPTUN),y)