diff --git a/src/kits/interface/Box.cpp b/src/kits/interface/Box.cpp
index 41159fc7a3..625f383b99 100644
--- a/src/kits/interface/Box.cpp
+++ b/src/kits/interface/Box.cpp
@@ -26,6 +26,7 @@
 //------------------------------------------------------------------------------
 
 // Standard Includes -----------------------------------------------------------
+#include <stdlib.h>
 #include <string.h>
 
 // System Includes -------------------------------------------------------------
diff --git a/src/kits/interface/TextInput.cpp b/src/kits/interface/TextInput.cpp
index 32837234c9..4f3d5ada5c 100644
--- a/src/kits/interface/TextInput.cpp
+++ b/src/kits/interface/TextInput.cpp
@@ -27,6 +27,8 @@
 
 // Standard Includes -----------------------------------------------------------
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 // System Includes -------------------------------------------------------------
 #include <InterfaceDefs.h>