diff --git a/src/display.cpp b/src/display.cpp
index e28e3370e25..00826ffffad 100644
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -114,7 +114,7 @@ display::display(const display_context* dc,
 	, diagnostic_label_(0)
 	, turbo_speed_(2)
 	, turbo_(false)
-	, map_labels_(new map_labels(0))
+	, map_labels_(new map_labels(nullptr))
 	, scroll_event_("scrolled")
 	, complete_redraw_event_("completely_redrawn")
 	, fps_counter_()
diff --git a/src/generators/cave_map_generator.hpp b/src/generators/cave_map_generator.hpp
index b733d639af6..e0cce4fff7e 100644
--- a/src/generators/cave_map_generator.hpp
+++ b/src/generators/cave_map_generator.hpp
@@ -45,7 +45,7 @@ private:
 			chamber()
 				: center()
 				, locs()
-				, items(0)
+				, items(nullptr)
 			{
 			}