diff --git a/src/EbmlString.cpp b/src/EbmlString.cpp
index 27e55fd..4c05fcf 100644
--- a/src/EbmlString.cpp
+++ b/src/EbmlString.cpp
@@ -34,6 +34,7 @@
   \author Steve Lhomme     <robux4 @ users.sf.net>
 */
 #include <cassert>
+#include <limits>
 
 #include "ebml/EbmlString.h"
 
diff --git a/src/EbmlUnicodeString.cpp b/src/EbmlUnicodeString.cpp
index 496a16a..99fc073 100644
--- a/src/EbmlUnicodeString.cpp
+++ b/src/EbmlUnicodeString.cpp
@@ -36,6 +36,7 @@
 */
 
 #include <cassert>
+#include <limits>
 
 #include "ebml/EbmlUnicodeString.h"