diff --git a/CMakeLists.txt b/CMakeLists.txt
index 78227137..c51acd63 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,9 +29,8 @@ if (HAVE_STD_CPP11_FLAG)
     int main() {}" FMT_CPP11_CMATH)
   if (FMT_CPP11_CMATH)
     set(CPP11_FLAG -std=c++11)
-  else ()
-    set(CMAKE_REQUIRED_FLAGS "")
   endif ()
+  set(CMAKE_REQUIRED_FLAGS )
 else ()
   check_cxx_compiler_flag(-std=c++0x HAVE_STD_CPP0X_FLAG)
   if (HAVE_STD_CPP0X_FLAG)
@@ -66,7 +65,6 @@ if (WIN32)
 else ()
   check_symbol_exists(open fcntl.h HAVE_OPEN)
 endif ()
-message("HAVE_OPEN: ${HAVE_OPEN}")
 if (HAVE_OPEN)
   add_definitions(-DFMT_USE_FILE_DESCRIPTORS=1)
   set(FMT_SOURCES ${FMT_SOURCES} posix.cc posix.h)