diff --git a/libretroshare/src/services/p3bwctrl.h b/libretroshare/src/services/p3bwctrl.h
index 9e80bb188..67e6f97fd 100644
--- a/libretroshare/src/services/p3bwctrl.h
+++ b/libretroshare/src/services/p3bwctrl.h
@@ -74,7 +74,7 @@ class BwCtrlData
 class p3BandwidthControl: public p3Service, public pqiServiceMonitor
 {
 	public:
-		p3BandwidthControl(pqipersongrp *pg);
+		explicit p3BandwidthControl(pqipersongrp *pg);
 		virtual RsServiceInfo getServiceInfo();
 
 		/***** overloaded from RsBanList *****/