diff --git a/mozilla/string/obsolete/nsString.cpp b/mozilla/string/obsolete/nsString.cpp
index ca5837b4103..4c746be8d77 100644
--- a/mozilla/string/obsolete/nsString.cpp
+++ b/mozilla/string/obsolete/nsString.cpp
@@ -20,6 +20,7 @@
 #include <ctype.h>
 #include <string.h> 
 #include <stdio.h>
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsCRT.h"
diff --git a/mozilla/string/obsolete/nsString2.cpp b/mozilla/string/obsolete/nsString2.cpp
index 071ae6baca5..b2497ab52bd 100644
--- a/mozilla/string/obsolete/nsString2.cpp
+++ b/mozilla/string/obsolete/nsString2.cpp
@@ -19,6 +19,7 @@
 
 #include <ctype.h>
 #include <string.h> 
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsDeque.h"
diff --git a/mozilla/xpcom/ds/nsString.cpp b/mozilla/xpcom/ds/nsString.cpp
index ca5837b4103..4c746be8d77 100644
--- a/mozilla/xpcom/ds/nsString.cpp
+++ b/mozilla/xpcom/ds/nsString.cpp
@@ -20,6 +20,7 @@
 #include <ctype.h>
 #include <string.h> 
 #include <stdio.h>
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsCRT.h"
diff --git a/mozilla/xpcom/ds/nsString2.cpp b/mozilla/xpcom/ds/nsString2.cpp
index 071ae6baca5..b2497ab52bd 100644
--- a/mozilla/xpcom/ds/nsString2.cpp
+++ b/mozilla/xpcom/ds/nsString2.cpp
@@ -19,6 +19,7 @@
 
 #include <ctype.h>
 #include <string.h> 
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsDeque.h"
diff --git a/mozilla/xpcom/string/obsolete/nsString.cpp b/mozilla/xpcom/string/obsolete/nsString.cpp
index ca5837b4103..4c746be8d77 100644
--- a/mozilla/xpcom/string/obsolete/nsString.cpp
+++ b/mozilla/xpcom/string/obsolete/nsString.cpp
@@ -20,6 +20,7 @@
 #include <ctype.h>
 #include <string.h> 
 #include <stdio.h>
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsCRT.h"
diff --git a/mozilla/xpcom/string/obsolete/nsString2.cpp b/mozilla/xpcom/string/obsolete/nsString2.cpp
index 071ae6baca5..b2497ab52bd 100644
--- a/mozilla/xpcom/string/obsolete/nsString2.cpp
+++ b/mozilla/xpcom/string/obsolete/nsString2.cpp
@@ -19,6 +19,7 @@
 
 #include <ctype.h>
 #include <string.h> 
+#include <stdlib.h>
 #include "nsString.h"
 #include "nsDebug.h"
 #include "nsDeque.h"