diff --git a/main.odin b/main.odin
index f753caf..25c9695 100644
--- a/main.odin
+++ b/main.odin
@@ -48,6 +48,8 @@ main :: proc() {
 
 		//print html file name
 		sb := strings.builder_make(arena_alloc) //sb for writing to files, resets ever iteration
+		defer strings.builder_destroy(&sb)
+
 		strings.write_string(&sb, fmt.aprintf("%v", trimmed_filename, allocator = arena_alloc))
 		strings.write_string(&sb, ".html")