diff --git a/README.md b/README.md
index ebc8c856..c1d4547b 100644
--- a/README.md
+++ b/README.md
@@ -9,5 +9,8 @@ On Windows:
 * LLVM 6.0.1 installation; currently must be installed to `C:\Program Files\LLVM\`
 * Python 3+
 * Python packages `clang` and `mako`
+* You'll also need to download glew 2.1.0 and extract it into the externals folder (so you have `externals/glew-2.1.0/`).
+
+In addition you'll need to compile assimp and nod separately with CMake. The build system is kind of a pain right now, sorry.
 
 Most of the project code is cross-platform, but currently has only been tested on Windows, and parts of the build process most likely will not work correctly on other platforms.