diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 69d805cb9a..f2802b6245 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,7 +17,13 @@ elseif(UNIX AND NOT APPLE)
     if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.9)
       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector-strong")
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector-strong")
+    else()
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector --param=ssp-buffer-size=4")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector --param=ssp-buffer-size=4")
     endif()
+  else()
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector-strong")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector-strong")
   endif()
 
   string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)