diff --git a/CMakeLists.txt b/CMakeLists.txt
index e350e62252..5e6609e72a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -132,9 +132,7 @@ else()
 endif()
 
 if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^x86" OR 
-   ${CMAKE_SYSTEM_PROCESSOR} MATCHES "i686" OR
-   ${CMAKE_SYSTEM_PROCESSOR} MATCHES "i486" OR
-   ${CMAKE_SYSTEM_PROCESSOR} MATCHES "i386" OR
+   ${CMAKE_SYSTEM_PROCESSOR} MATCHES "i.86" OR
    ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 	add_definitions(-msse2)
 	set(_M_X86 1)