diff --git a/src/game.cc b/src/game.cc
index 34ebfe1..3c9c366 100644
--- a/src/game.cc
+++ b/src/game.cc
@@ -62,8 +62,8 @@
 #include <unistd.h> // access
 #endif
 
-#include <cstring> // strcpy, strncmp
 #include <stdio.h>
+#include <string.h>
 
 #define HELP_SCREEN_WIDTH (640)
 #define HELP_SCREEN_HEIGHT (480)
diff --git a/src/game_dialog.cc b/src/game_dialog.cc
index 9e93341..b454c14 100644
--- a/src/game_dialog.cc
+++ b/src/game_dialog.cc
@@ -32,7 +32,7 @@
 
 #include <assert.h>
 #include <stdio.h>
-#include <cstring> // memset, strcpy
+#include <string.h>
 
 #define GAME_DIALOG_WINDOW_WIDTH 640
 #define GAME_DIALOG_WINDOW_HEIGHT 480
diff --git a/src/interface.cc b/src/interface.cc
index c115106..e36fb15 100644
--- a/src/interface.cc
+++ b/src/interface.cc
@@ -28,8 +28,8 @@
 #include "tile.h"
 #include "window_manager.h"
 
-#include <cstring> // memcpy, strcpy
 #include <stdio.h>
+#include <string.h>
 
 // The width of connectors in the indicator box.
 //
diff --git a/src/inventory.cc b/src/inventory.cc
index 333e141..ed2ef57 100644
--- a/src/inventory.cc
+++ b/src/inventory.cc
@@ -36,8 +36,8 @@
 #include "window_manager.h"
 
 #include <assert.h>
-#include <cstring> // memcpy, strcpy
 #include <stdio.h>
+#include <string.h>
 
 #include <algorithm>