diff --git a/sdrbase/dsp/dspdevicemimoengine.h b/sdrbase/dsp/dspdevicemimoengine.h
index 6cd6f42cb..2f3f34b42 100644
--- a/sdrbase/dsp/dspdevicemimoengine.h
+++ b/sdrbase/dsp/dspdevicemimoengine.h
@@ -21,6 +21,7 @@
 
 #include <QThread>
 
+#include "dsp/dsptypes.h"
 #include "util/message.h"
 #include "util/messagequeue.h"
 #include "util/syncmessenger.h"
@@ -399,4 +400,4 @@ private slots:
 	void handleForwardToSpectrumSink(int nbSamples);
 };
 
-#endif // SDRBASE_DSP_DSPDEVICEMIMOENGINE_H_
\ No newline at end of file
+#endif // SDRBASE_DSP_DSPDEVICEMIMOENGINE_H_