diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 8d7d6daf3..09b2811ed 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -147,6 +147,7 @@ IF(WITH_QT5)
   FIND_PACKAGE(Qt5Core)
   FIND_PACKAGE(Qt5Widgets)
   FIND_PACKAGE(Qt5LinguistTools)
+  ADD_DEFINITIONS(-DQT_NO_DEBUG)
 ENDIF(WITH_QT5)
 
 IF(WITH_NEL)