diff --git a/src/devices/nm-device-bond.c b/src/devices/nm-device-bond.c
index 8d9939b096..ae3d4ddb96 100644
--- a/src/devices/nm-device-bond.c
+++ b/src/devices/nm-device-bond.c
@@ -447,10 +447,15 @@ release_slave (NMDevice *device, NMDevice *slave)
 	success = nm_platform_link_release (nm_device_get_ip_ifindex (device),
 	                                    nm_device_get_ip_ifindex (slave));
 
-	nm_log_info (LOGD_BOND, "(%s): released bond slave %s (success %d)",
-	             nm_device_get_ip_iface (device),
-	             nm_device_get_ip_iface (slave),
-	             success);
+	if (success) {
+		nm_log_info (LOGD_BOND, "(%s): released bond slave %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	} else {
+		nm_log_warn (LOGD_BOND, "(%s): failed to release bond slave %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	}
 	g_object_notify (G_OBJECT (device), "slaves");
 
 	/* Kernel bonding code "closes" the slave when releasing it, (which clears
diff --git a/src/devices/nm-device-bridge.c b/src/devices/nm-device-bridge.c
index 92cc9f2a77..99aa0aff2c 100644
--- a/src/devices/nm-device-bridge.c
+++ b/src/devices/nm-device-bridge.c
@@ -404,10 +404,16 @@ release_slave (NMDevice *device, NMDevice *slave)
 	success = nm_platform_link_release (nm_device_get_ip_ifindex (device),
 	                                    nm_device_get_ip_ifindex (slave));
 
-	nm_log_info (LOGD_BRIDGE, "(%s): detached bridge port %s (success %d)",
-	             nm_device_get_ip_iface (device),
-	             nm_device_get_ip_iface (slave),
-	             success);
+	if (success) {
+		nm_log_info (LOGD_BRIDGE, "(%s): detached bridge port %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	} else {
+		nm_log_warn (LOGD_BRIDGE, "(%s): failed to detach bridge port %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	}
+
 	g_object_notify (G_OBJECT (device), NM_DEVICE_BRIDGE_SLAVES);
 	return success;
 }
diff --git a/src/devices/nm-device-team.c b/src/devices/nm-device-team.c
index a82b4c6bfc..ee0fa561bd 100644
--- a/src/devices/nm-device-team.c
+++ b/src/devices/nm-device-team.c
@@ -717,10 +717,15 @@ release_slave (NMDevice *device, NMDevice *slave)
 	success = nm_platform_link_release (nm_device_get_ip_ifindex (device),
 	                                    nm_device_get_ip_ifindex (slave));
 
-	nm_log_info (LOGD_TEAM, "(%s): released team port %s (success %d)",
-	             nm_device_get_ip_iface (device),
-	             nm_device_get_ip_iface (slave),
-	             success);
+	if (success) {
+		nm_log_info (LOGD_TEAM, "(%s): released team port %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	} else {
+		nm_log_warn (LOGD_TEAM, "(%s): failed to release team port %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	}
 	g_object_notify (G_OBJECT (device), "slaves");
 
 	/* Kernel team code "closes" the port when releasing it, (which clears
diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 1f5fb718d3..d326d2f8e6 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -960,7 +960,9 @@ nm_device_release_one_slave (NMDevice *dev, NMDevice *slave)
 
 	if (info->enslaved) {
 		success = NM_DEVICE_GET_CLASS (dev)->release_slave (dev, slave);
-		g_warn_if_fail (success);
+		/* The release_slave() implementation logs success/failure (in the
+		 * correct device-specific log domain), so we don't have to do anything.
+		 */
 	}
 
 	if (priv->state == NM_DEVICE_STATE_FAILED)