diff --git a/components/netspeeds.c b/components/netspeeds.c
index 02c030e..665dffd 100644
--- a/components/netspeeds.c
+++ b/components/netspeeds.c
@@ -28,6 +28,9 @@
 		if (oldrxbytes == 0) {
 			return NULL;
 		}
+		if (rxbytes == 0) {
+			rxbytes = oldrxbytes;
+		}
 
 		return fmt_human((rxbytes - oldrxbytes) * 1000 / interval,
 		                 1024);
@@ -54,6 +57,9 @@
 		if (oldtxbytes == 0) {
 			return NULL;
 		}
+		if (txbytes == 0) {
+			txbytes = oldtxbytes;
+		}
 
 		return fmt_human((txbytes - oldtxbytes) * 1000 / interval,
 		                 1024);