diff --git a/src/apps/cortex/Persistence/ExportContext.h b/src/apps/cortex/Persistence/ExportContext.h
index f99d773e32..81b9747926 100644
--- a/src/apps/cortex/Persistence/ExportContext.h
+++ b/src/apps/cortex/Persistence/ExportContext.h
@@ -12,7 +12,7 @@
 #include <Debug.h>
 
 #include <String.h>
-#include <ostream>
+#include <iostream>
 
 #include <list>
 #include <utility>
diff --git a/src/apps/cortex/Persistence/IPersistent.h b/src/apps/cortex/Persistence/IPersistent.h
index 995760de82..e63efad302 100644
--- a/src/apps/cortex/Persistence/IPersistent.h
+++ b/src/apps/cortex/Persistence/IPersistent.h
@@ -22,7 +22,7 @@
 #include "ImportContext.h"
 #include "ExportContext.h"
 
-#include <ostream>
+#include <iostream>
 
 #include "cortex_defs.h"
 __BEGIN_CORTEX_NAMESPACE