diff --git a/sim/Makefile.in b/sim/Makefile.in
index 8fd48426fa5..f19f245553b 100644
--- a/sim/Makefile.in
+++ b/sim/Makefile.in
@@ -5406,9 +5406,6 @@ testsuite/common/bits64m63.c: testsuite/common/bits-gen$(EXEEXT) testsuite/commo
 @SIM_ENABLE_ARCH_riscv_TRUE@	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
 @SIM_ENABLE_ARCH_rl78_TRUE@$(rl78_libsim_a_OBJECTS) $(rl78_libsim_a_LIBADD): rl78/hw-config.h
 
-@SIM_ENABLE_ARCH_rl78_TRUE@rl78/%.o: rl78/%.c
-@SIM_ENABLE_ARCH_rl78_TRUE@	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
-
 @SIM_ENABLE_ARCH_rl78_TRUE@rl78/%.o: common/%.c
 @SIM_ENABLE_ARCH_rl78_TRUE@	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
 @SIM_ENABLE_ARCH_rx_TRUE@$(rx_libsim_a_OBJECTS) $(rx_libsim_a_LIBADD): rx/hw-config.h
diff --git a/sim/rl78/local.mk b/sim/rl78/local.mk
index 935fbf1eea0..13962a9e302 100644
--- a/sim/rl78/local.mk
+++ b/sim/rl78/local.mk
@@ -30,9 +30,6 @@ $(%C%_libsim_a_OBJECTS) $(%C%_libsim_a_LIBADD): %D%/hw-config.h
 
 noinst_LIBRARIES += %D%/libsim.a
 
-%D%/%.o: %D%/%.c
-	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
-
 %D%/%.o: common/%.c
 	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)