diff --git a/sflphone-gtk/src/errors.h b/sflphone-gtk/src/errors.h
index 4f3a9c32ecdcf18a65f3d3510c392dbc3959301e..f1176bc191cd5e0358cb75bd68f3cb2f6bc99fca 100644
--- a/sflphone-gtk/src/errors.h
+++ b/sflphone-gtk/src/errors.h
@@ -24,7 +24,10 @@
   * @brief Implements internal errors notifications to the client.
   */
 
+#include <stdlib.h>
+
 #include <sflphone_const.h>
+#include <mainwindow.h>
 
 /**
  * Display an internal error.