diff --git a/src/Makefile.in b/src/Makefile.in
index f4db5ff05..d0fec43a7 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -55,7 +55,7 @@ obj_dbg:
 
 opt: ../bin/verilator_bin
 ifeq ($(VERILATOR_NO_OPT_BUILD),1)	# Faster laptop development... One build
-../bin/verilator_bin: ../bin ../bin/verilator_bin_dbg
+../bin/verilator_bin: ../bin/verilator_bin_dbg
 	-rm -rf $@ $@.exe
 	-cp -p $<$(EXEEXT) $@$(EXEEXT)
 else