diff --git a/agent/CMakeLists.txt b/agent/CMakeLists.txt
index a47cd0431..6ac30d2c0 100644
--- a/agent/CMakeLists.txt
+++ b/agent/CMakeLists.txt
@@ -45,7 +45,7 @@ tde_add_library( polkit-tqt-agent SHARED AUTOMOC
     listeneradapter.cpp
     polkit-tqt-listener.cpp
   VERSION 0.0.0
+  CXX_FEATURES cxx_nullptr
   LINK ${TQT_LIBRARIES} ${POLKIT_GOBJECT_LIBRARIES} ${POLKIT_AGENT_LIBRARIES} polkit-tqt-core-shared
   DESTINATION ${LIB_INSTALL_DIR}
 )
-
diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index e0aa29709..0d0e22859 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -47,7 +47,7 @@ tde_add_library( polkit-tqt-core SHARED AUTOMOC
     polkit-tqt-subject.cpp
     polkit-tqt-temporaryauthorization.cpp
   VERSION 0.0.0
+  CXX_FEATURES cxx_nullptr
   LINK ${TQT_LIBRARIES} ${POLKIT_GOBJECT_LIBRARIES}
   DESTINATION ${LIB_INSTALL_DIR}
 )
-
diff --git a/gui/CMakeLists.txt b/gui/CMakeLists.txt
index 2746b37d9..0627613a7 100644
--- a/gui/CMakeLists.txt
+++ b/gui/CMakeLists.txt
@@ -42,7 +42,7 @@ tde_add_library( polkit-tqt-gui SHARED AUTOMOC
     polkit-tqt-gui-actionbutton.cpp
     polkit-tqt-gui-actionbuttons.cpp
   VERSION 0.0.0
+  CXX_FEATURES cxx_nullptr
   LINK ${TQT_LIBRARIES} ${POLKIT_GOBJECT_LIBRARIES} polkit-tqt-core-shared
   DESTINATION ${LIB_INSTALL_DIR}
 )
-