diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index d2bc70d05..7c2c79b8d 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -60,6 +60,9 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES MSVC)
     set(CMAKE_C_FLAGS_RELEASE "/MT /O2 /Oi /DNDEBUG /GL")
     set(CMAKE_CXX_FLAGS_RELEASE "/MT /O2 /Oi /DNDEBUG /GL")
 
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO "/Ob1 /GL")
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Ob1 /GL")
+
     add_definitions(/D_CRT_SECURE_NO_WARNINGS)
     add_definitions(/D_CRT_NONSTDC_NO_WARNINGS)
     add_definitions(/DNOMINMAX)