diff --git a/CMakeLists.txt b/CMakeLists.txt
index b1f0e9cf..4bc95329 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -156,6 +156,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
 
     message(STATUS "Detected GCC version 4.7+")
 
+    set(NORMAL_CXX_FLAGS "-Wall -Wold-style-cast -pedantic-errors -Wmissing-declarations -lstdc++fs")
     set(NORMAL_CXX_FLAGS "-Wall -Wold-style-cast -pedantic-errors -Wmissing-declarations")
     set(NORMAL_CXX_FLAGS "${NORMAL_CXX_FLAGS} -Wno-error=deprecated-declarations") # updated version of physfs is not available on some platforms so we keep using deprecated functions, see #958