diff --git a/plugins/samplemimo/limesdrmimo/limesdrmimo.h b/plugins/samplemimo/limesdrmimo/limesdrmimo.h
index 89e4d20ea..7547887c3 100644
--- a/plugins/samplemimo/limesdrmimo/limesdrmimo.h
+++ b/plugins/samplemimo/limesdrmimo/limesdrmimo.h
@@ -34,7 +34,7 @@ class QNetworkReply;
 class DeviceAPI;
 class LimeSDRMIThread;
 class LimeSDRMOThread;
-class DeviceLimeSDRParams;
+struct DeviceLimeSDRParams;
 
 class LimeSDRMIMO : public DeviceSampleMIMO {
     Q_OBJECT
diff --git a/plugins/samplemimo/xtrxmimo/xtrxmimo.h b/plugins/samplemimo/xtrxmimo/xtrxmimo.h
index f7270548c..832dd0196 100644
--- a/plugins/samplemimo/xtrxmimo/xtrxmimo.h
+++ b/plugins/samplemimo/xtrxmimo/xtrxmimo.h
@@ -33,7 +33,7 @@ class QNetworkReply;
 class DeviceAPI;
 class XTRXMIThread;
 class XTRXMOThread;
-class DeviceLimeSDRParams;
+struct DeviceLimeSDRParams;
 
 #endif // PLUGINS_SAMPLEMIMO_XTRXMIMO_XTRXMIMO_H_