diff --git a/Makefile.nmake b/Makefile.nmake
index d32417f..98eb075 100644
--- a/Makefile.nmake
+++ b/Makefile.nmake
@@ -335,6 +335,8 @@ perfs = \
 
 perfs: lib $(perfs)
 $(perfs): $(@B).obj
+perf: $(perfs)
+	!$?
 
 progs = \
 	igzip.exe
diff --git a/tools/gen_nmake.mk b/tools/gen_nmake.mk
index 55952fb..a65b655 100644
--- a/tools/gen_nmake.mk
+++ b/tools/gen_nmake.mk
@@ -99,6 +99,8 @@ endif
 	@echo ''			>> $@
 	@echo 'perfs: lib $$(perfs)'	>> $@
 	@echo '$$(perfs): $$(@B).obj'	>> $@
+	@echo 'perf: $$(perfs)'	>> $@
+	@echo '	!$$?'			>> $@
 	@echo ''			>> $@
 	@printf 'progs ='		>> $@
 	@$(foreach prog, $(notdir $(bin_PROGRAMS)), printf " %s\n\t%s.exe" \\ $(prog) >> $@; )