diff --git a/source/modules/water/text/CharacterFunctions.h b/source/modules/water/text/CharacterFunctions.h
index 4108e99..d9dfe8a 100644
--- source/modules/water/text/CharacterFunctions.h
+++ source/modules/water/text/CharacterFunctions.h
@@ -29,6 +29,7 @@
 #include "../memory/Memory.h"
 
 #include <algorithm>
+#include <limits>
 
 namespace water {
 
diff --git a/source/modules/water/text/String.h b/source/modules/water/text/String.h
index b636146..39cc712 100644
--- source/modules/water/text/String.h
+++ source/modules/water/text/String.h
@@ -30,6 +30,7 @@
 #include "../memory/Memory.h"
 
 #include <string>
+#include <limits>
 
 namespace water {