diff --git a/thirdparty/cotire.cmake b/thirdparty/cotire.cmake
index 948ac15..075ec79 100644
--- a/thirdparty/cotire.cmake
+++ b/thirdparty/cotire.cmake
@@ -931,7 +931,13 @@ function (cotire_add_includes_to_cmd _cmdVar _language _includesVar _systemInclu
 					list (FIND ${_systemIncludesVar} "${_include}" _index)
 				endif()
 				if (_index GREATER -1)
-					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
+					if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
+						string(REPLACE " " "" _flag ${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}})
+						list (APPEND ${_cmdVar} "${_flag}")
+						list (APPEND ${_cmdVar} "${_include}")
+					else()
+						list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
+					endif()
 				else()
 					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
 				endif()