diff --git a/src/util/fossilize_db.c b/src/util/fossilize_db.c
index e1709a1ff64..26024101b83 100644
--- a/src/util/fossilize_db.c
+++ b/src/util/fossilize_db.c
@@ -156,18 +156,18 @@ update_foz_index(struct foz_db *foz_db, FILE *db_idx, unsigned file_idx)
       offset += header->payload_size;
       parsed_offset = offset;
 
-      /* Truncate the entry's hash string to a 64bit hash for use with a
-       * 64bit hash table for looking up file offsets.
-       */
-      hash_str[16] = '\0';
-      uint64_t key = strtoull(hash_str, NULL, 16);
-
       struct foz_db_entry *entry = ralloc(foz_db->mem_ctx,
                                           struct foz_db_entry);
       entry->header = *header;
       entry->file_idx = file_idx;
       _mesa_sha1_hex_to_sha1(entry->key, hash_str);
 
+      /* Truncate the entry's hash string to a 64bit hash for use with a
+       * 64bit hash table for looking up file offsets.
+       */
+      hash_str[16] = '\0';
+      uint64_t key = strtoull(hash_str, NULL, 16);
+
       entry->offset = cache_offset;
 
       _mesa_hash_table_u64_insert(foz_db->index_db, key, entry);