diff --git a/docs/INSTALL-CMAKE.md b/docs/INSTALL-CMAKE.md
index 74c8094656..37231f9e45 100644
--- a/docs/INSTALL-CMAKE.md
+++ b/docs/INSTALL-CMAKE.md
@@ -66,6 +66,13 @@ If you want to build in the source tree, it is enough to do this:
 
     $ cmake .
 
+### Build system generator selection
+
+You can override CMake's default by using `-G <generator-name>`. For example
+on Windows with multiple build systems if you have MinGW-w64 then you could use
+`-G "MinGW Makefiles"`.
+[List of generator names](https://cmake.org/cmake/help/latest/manual/cmake-generators.7.html).
+
 ## Using `ccmake`
 
 CMake comes with a curses based interface called `ccmake`. To run `ccmake`