diff --git a/qucs/qucs/mouseactions.cpp b/qucs/qucs/mouseactions.cpp

index 32a933528..504b2f9fc 100644

--- a/qucs/qucs/mouseactions.cpp

+++ b/qucs/qucs/mouseactions.cpp

@@ -46,6 +46,7 @@

 #include <QDebug>

 #include <limits.h>

+#include <stdint.h>

 #include <stdlib.h>

diff --git a/qucs/qucs/schematic_element.cpp b/qucs/qucs/schematic_element.cpp

index d30db3f58..763d052c4 100644

--- a/qucs/qucs/schematic_element.cpp

+++ b/qucs/qucs/schematic_element.cpp

@@ -14,6 +14,7 @@

  *   (at your option) any later version.                                   *

  *                                                                         *

  ***************************************************************************/

+#include <stdint.h>

 #include <stdlib.h>

 #include <limits.h>