diff --git a/toys/pending/lsof.c b/toys/pending/lsof.c
index 2ab4177..e4b5311 100644
--- a/toys/pending/lsof.c
+++ b/toys/pending/lsof.c
@@ -330,10 +330,10 @@
 {
   FILE *fp;
   unsigned long long offset;
-  char device[10];
   long inode;
-  char *line = NULL;
+  char *line = NULL, device[10]; // xxx:xxxxx\0
   size_t line_length = 0;
+  struct file_info *fi;
 
   snprintf(toybuf, sizeof(toybuf), "/proc/%d/maps", pi->pid);
   fp = fopen(toybuf, "r");
@@ -342,10 +342,8 @@
   while (getline(&line, &line_length, fp) > 0) {
     int name_pos;
 
-    if (sscanf(line, "%*x-%*x %*s %llx %s %ld %n",
+    if (sscanf(line, "%*x-%*x %*s %llx %9s %ld %n",
                &offset, device, &inode, &name_pos) >= 3) {
-      struct file_info *fi;
-
       // Ignore non-file maps.
       if (inode == 0 || !strcmp(device, "00:00")) continue;
       // TODO: show unique maps even if they have a non-zero offset?