diff --git a/src/common.c b/src/common.c
index f1bffcb4..4e140db6 100644
--- a/src/common.c
+++ b/src/common.c
@@ -525,11 +525,11 @@ uint8_t swap_percentage(struct text_object *obj)
 	return (info.swapmax ? round_to_int(info.swap * 100 / info.swapmax) : 0);
 }
 
-uint8_t swap_barval(struct text_object *obj)
+double swap_barval(struct text_object *obj)
 {
 	(void)obj;
 
-	return round_to_int(info.swapmax ? (info.swap * 255 / info.swapmax) : 0);
+	return info.swapmax ? ((double)info.swap / info.swapmax) : 0;
 }
 
 void print_kernel(struct text_object *obj, char *p, int p_max_size)
diff --git a/src/common.h b/src/common.h
index cef49295..5fae3d23 100644
--- a/src/common.h
+++ b/src/common.h
@@ -83,7 +83,7 @@ void print_swapmax(struct text_object *, char *, int);
 uint8_t mem_percentage(struct text_object *);
 double mem_barval(struct text_object *);
 uint8_t swap_percentage(struct text_object *);
-uint8_t swap_barval(struct text_object *);
+double swap_barval(struct text_object *);
 
 void print_kernel(struct text_object *, char *, int);
 void print_machine(struct text_object *, char *, int);
diff --git a/src/core.c b/src/core.c
index a6f5749b..8b0d7300 100644
--- a/src/core.c
+++ b/src/core.c
@@ -1032,7 +1032,7 @@ struct text_object *construct_text_object(const char *s, const char *arg, long
 	END OBJ(swapperc, &update_meminfo)
 		obj->callbacks.percentage = &swap_percentage;
 	END OBJ(swapbar, &update_meminfo)
-		scan_bar(obj, arg, 255);
+		scan_bar(obj, arg, 1);
 		obj->callbacks.barval = &swap_barval;
 	/* XXX: swapgraph, swapgauge? */
 	END OBJ(sysname, 0)