diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8b0d3a67c21c..7cd52ad0e164 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,7 +50,7 @@ if(DEFINED ENV{INSTALL_PREFIX})
   list(APPEND CMAKE_PREFIX_PATH "$ENV{INSTALL_PREFIX}")
   # Allow installed package headers to be picked up before brew/system package
   # headers
-  include_directories(BEFORE "$ENV{INSTALL_PREFIX}/include")
+  include_directories("$ENV{INSTALL_PREFIX}/include")
 endif()
 
 list(PREPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMake"