diff --git a/winbuild/build_dep.py b/winbuild/build_dep.py
index 12c4cf2d6..db4762b25 100644
--- a/winbuild/build_dep.py
+++ b/winbuild/build_dep.py
@@ -197,7 +197,7 @@ copy %%~dp0\nmake.opt %%TIFF%%
 
 cd /D %%TIFF%%
 nmake -f makefile.vc clean
-nmake -f makefile.vc 
+nmake -f makefile.vc lib
 copy /Y /B libtiff\*.dll %%INCLIB%%
 copy /Y /B libtiff\*.lib %%INCLIB%%
 copy /Y /B libtiff\tiff*.h %%INCLIB%%