diff --git a/CMakeLists.txt b/CMakeLists.txt
index b75b2b19b12868aa993f993334078d7fff89e3df..1f589b08f215517789305a2d1a55c9c1fc554d2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,7 +60,6 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu90")
 
 add_definitions(-DQT_NO_FOREACH)
 add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x050d00)
-add_definitions(-DQT_DEPRECATED_WARNINGS_SINCE=0x060000)
 # Subdirectories
 if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/po")
     ecm_install_po_files_as_qm(po)