diff --git a/CMakeLists.txt b/CMakeLists.txt
index 415aac9f5..a753080d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ else()
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-multichar -fno-exceptions")
 endif()
 
-if(UNIX)
+if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
 include_directories(/usr/local/include)
 endif()