diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2dc30a21d4..19d2d3886b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -235,12 +235,6 @@ endif()
 #===============================================================================
 
 add_library(pugixml src/pugixml/pugixml_c.cpp src/pugixml/pugixml.cpp)
-if(CMAKE_VERSION VERSION_LESS 3.1)
-  target_compile_options(pugixml PRIVATE -std=c++11)
-else()
-  set_property(TARGET pugixml PROPERTY CXX_STANDARD 11)
-endif()
-
 add_library(pugixml_fortran src/pugixml/pugixml_f.F90)
 target_link_libraries(pugixml_fortran pugixml)
 
diff --git a/src/pugixml/pugiconfig.hpp b/src/pugixml/pugiconfig.hpp
index 2d1e6aa8b0..2f1027aa38 100644
--- a/src/pugixml/pugiconfig.hpp
+++ b/src/pugixml/pugiconfig.hpp
@@ -44,7 +44,7 @@
 // #define PUGIXML_HEADER_ONLY
 
 // Uncomment this to enable long long support
-// #define PUGIXML_HAS_LONG_LONG
+#define PUGIXML_HAS_LONG_LONG
 
 #endif