diff --git a/setup/installer/windows/notes.rst b/setup/installer/windows/notes.rst
index cd148e7f26..9dd0d6b166 100644
--- a/setup/installer/windows/notes.rst
+++ b/setup/installer/windows/notes.rst
@@ -228,10 +228,9 @@ Download the libpng .zip source file from:
 http://www.libpng.org/pub/png/libpng.html
 
 Run::
-    mkdir -p build && cd build
-    cmake -G "NMake Makefiles" -DPNG_SHARED=1 -DCMAKE_BUILD_TYPE=Release -DZLIB_INCLUDE_DIR=C:/cygwin64/home/kovid/sw/include -DZLIB_LIBRARY=C:/cygwin64/home/kovid/sw/lib/zdll.lib ..
+    cmake -G "NMake Makefiles" -DPNG_SHARED=1 -DCMAKE_BUILD_TYPE=Release -DZLIB_INCLUDE_DIR=C:/cygwin64/home/kovid/sw/include -DZLIB_LIBRARY=C:/cygwin64/home/kovid/sw/lib/zdll.lib .
     nmake
-    cp libpng*.dll ~/sw/bin/ && cp libpng*.lib ~/sw/lib/ && cp pnglibconf.h ../png.h ../pngconf.h ~/sw/include/
+    cp libpng*.dll ~/sw/bin/ && cp libpng*.lib ~/sw/lib/ && cp pnglibconf.h png.h pngconf.h ~/sw/include/
 
 freetype
 -----------