diff --git a/src/mididevice.cpp b/src/mididevice.cpp
index 9f3ff86..3843282 100644
--- a/src/mididevice.cpp
+++ b/src/mididevice.cpp
@@ -20,6 +20,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
+#include "kernel.h"
 #include "mididevice.h"
 #include "minidexed.h"
 #include "config.h"