1 files changed, 2 insertions, 1 deletions

diff --git a/sway/commands.c b/sway/commands.c
index 9f6e5032..58fc4aa5 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -14,6 +14,7 @@
 #include <limits.h>
 #include <float.h>
 #include <libinput.h>
+#include <math.h>
 #include "stringop.h"
 #include "layout.h"
 #include "focus.h"
@@ -1580,7 +1581,7 @@ static struct cmd_results *cmd_bar(int argc, char **argv) {
         int i;
         for (i = 0; i < config->bars->length; ++i) {
                 if (bar == config->bars->items[i]) {
-                        const int len = 5 + numlen(i); // "bar-" + i + \0
+                        const int len = 5 + log10(i) + 1; // "bar-" + i + \0
                         bar->id = malloc(len * sizeof(char));
                         snprintf(bar->id, len, "bar-%d", i);
                         break;