diff --git a/platforms/misterfpga.yml b/platforms/misterfpga.yml
index 80ab2b4d..1910c8d0 100644
--- a/platforms/misterfpga.yml
+++ b/platforms/misterfpga.yml
@@ -86,7 +86,7 @@ systems:
       required: true
       md5: a860e8c0b6d573d191e4ec7db1b1e4f6
       sha1: 300c20df6731a33952ded8c436f7f186d25d3492
-      crc32: 81977335
+      crc32: '81977335'
       size: 16384
     native_id: MiSTer - Game Boy Advance
     core: GBA_MiSTer