diff --git a/CMakeLists.txt b/CMakeLists.txt
index ae8285026..d5e405d9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,10 +78,10 @@ ELSEIF (CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
     # linux/gcc, bsd/gcc, windows/mingw, osx/llvm, bsd/llvm
     include(CheckCXXCompilerFlag)
 
-    set(CMAKE_CXX_FLAGS_RELEASE "-s -pedantic -std=c++11 -O3")
-    set(CMAKE_CXX_FLAGS_DEBUG "-g -Wall -Wextra -std=c++11 -pedantic -Werror")
+    set(CMAKE_CXX_FLAGS_RELEASE "-s -std=c++98 -pedantic -O3")
+    set(CMAKE_CXX_FLAGS_DEBUG "-g -Wall -Wextra -std=c++98 -pedantic -Werror")
 
-    set(ADDITIONAL_DEBUG_FLAGS -Wcast-align -Wmissing-declarations -Wno-long-long -Wno-error=extra -Wno-error=sign-compare -Wno-error=missing-declarations)
+    set(ADDITIONAL_DEBUG_FLAGS -Wcast-align -Wmissing-declarations -Wno-long-long -Wno-error=extra -Wno-error=sign-compare -Wno-error=missing-declarations -Wno-c++11-long-long)
 
     FOREACH(FLAG ${ADDITIONAL_DEBUG_FLAGS})
         CHECK_CXX_COMPILER_FLAG("${FLAG}" CXX_HAS_WARNING_${FLAG})