diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 0d0e1bf2a..e5e3e5635 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -201,6 +201,8 @@ if (LINUX)
     endif (NOT STANDALONE)
     set(CMAKE_CXX_FLAGS_RELEASESSE2 "${CMAKE_CXX_FLAGS_RELEASESSE2} -march=pentium4 -mfpmath=sse -msse2 ${GCC_EXTRA_OPTIMIZATIONS}")
     set(CMAKE_C_FLAGS_RELEASESSE2 "${CMAKE_C_FLAGS_RELEASESSE2} -march=pentium4 -mfpmath=sse -msse2 "${GCC_EXTRA_OPTIMIZATIONS})
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 ${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -march=pentium4 -mfpmath=sse -msse2 ${GCC_EXTRA_OPTIMIZATIONS}")
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 ${CMAKE_C_FLAGS_RELWITHDEBINFO} -march=pentium4 -mfpmath=sse -msse2 "${GCC_EXTRA_OPTIMIZATIONS})
   endif (VIEWER)
 
   set(CMAKE_CXX_FLAGS_DEBUG "-fno-inline ${CMAKE_CXX_FLAGS_DEBUG}")