diff --git a/oqsprov/oqs_sig.c b/oqsprov/oqs_sig.c
index 20c9419f..fa2b7b7c 100644
--- a/oqsprov/oqs_sig.c
+++ b/oqsprov/oqs_sig.c
@@ -700,7 +700,7 @@ static int oqs_sig_verify(void *vpoqs_sigctx, const unsigned char *sig,
         size_t buf_len;
         const unsigned char *oid_prefix = composite_OID_prefix[comp_idx - 1];
         char *final_tbs;
-        size_t final_tbslen = COMPOSITE_OID_PREFIRX_LEN / 2;
+        size_t final_tbslen = COMPOSITE_OID_PREFIX_LEN / 2;
         int aux = 0;
         unsigned char *tbs_hash;