diff --git a/components/swap.c b/components/swap.c
index 465ffd4..f5db667 100644
--- a/components/swap.c
+++ b/components/swap.c
@@ -188,6 +188,10 @@
 
 		getstats(&total, &used);
 
+		if (total == 0) {
+			return NULL;
+		}
+
 		return bprintf("%d%%", 100 * used / total);
 	}