diff --git a/src/plugins/debugger/procinterrupt.cpp b/src/plugins/debugger/procinterrupt.cpp
index 29033d1b94f..31e8eb1315d 100644
--- a/src/plugins/debugger/procinterrupt.cpp
+++ b/src/plugins/debugger/procinterrupt.cpp
@@ -28,6 +28,7 @@
 ****************************************************************************/
 
 #include "procinterrupt.h"
+#include "debuggerconstants.h"
 
 #include <QProcess> // makes kill visible on Windows.
 #include <QDir>