--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,6 +3,10 @@
 cmake_minimum_required (VERSION 3.1)
 project (aws-c-event-stream C)
 
+if (DEFINED ENV{CMAKE_PREFIX_PATH})
+    set(CMAKE_PREFIX_PATH $ENV{CMAKE_PREFIX_PATH})
+endif()
+
 if (DEFINED CMAKE_PREFIX_PATH)
     file(TO_CMAKE_PATH "${CMAKE_PREFIX_PATH}" CMAKE_PREFIX_PATH)
 endif()