diff --git a/README.md b/README.md
index aab2653..2e3dbf1 100644
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+++ b/README.md
@@ -45,7 +45,7 @@ git pull
 
 #### Windows:
 
-Assuming you have python already installed..
+Assuming you have python (2.7.12 or higher) already installed..
 
 Download Libav-Tools for windows: https://builds.libav.org/windows/release-gpl/libav-x86_64-w64-mingw32-11.7.7z.
 Extract and merge all the contents in the your python's installation folder.