diff --git a/src/36-timer-copy/bootstrap.bpf.c b/src/36-timer-copy/bootstrap.bpf.c
index 7ebb572..05534c2 100644
--- a/src/36-timer-copy/bootstrap.bpf.c
+++ b/src/36-timer-copy/bootstrap.bpf.c
@@ -18,7 +18,7 @@ struct map_elem {
 struct {
     __uint(type, BPF_MAP_TYPE_HASH);
     __uint(max_entries, 1000);
-    __type(key, int);`
+    __type(key, int);
     __type(value, struct map_elem);
 } hmap SEC(".maps");