diff --git a/src/kits/interface/TextControl.cpp b/src/kits/interface/TextControl.cpp
index 242753e493..7a8e2b57cf 100644
--- a/src/kits/interface/TextControl.cpp
+++ b/src/kits/interface/TextControl.cpp
@@ -10,6 +10,8 @@
 
 /*!	BTextControl displays text that can act like a control. */
 
+#include <string.h>
+
 #include <TextControl.h>
 
 #include <AbstractLayoutItem.h>