diff --git a/src/bun.js/module_loader.zig b/src/bun.js/module_loader.zig
index b8cd068110..2a41ee785b 100644
--- a/src/bun.js/module_loader.zig
+++ b/src/bun.js/module_loader.zig
@@ -220,6 +220,7 @@ fn dumpSourceStringFailiable(vm: *VirtualMachine, specifier: string, written: []
                 specifier,
                 std.math.maxInt(u64),
             ) catch "";
+            defer bun.default_allocator.free(source_file);
 
             var bufw = std.io.bufferedWriter(file.writer());
             const w = bufw.writer();