diff --git a/src/interface.c b/src/interface.c
index 3d50e26a2..15be5a5e7 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -11091,7 +11091,7 @@ int saph_sha1_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_
   token.attr[1]    = TOKEN_ATTR_VERIFY_LENGTH
                    | TOKEN_ATTR_VERIFY_DIGIT;
 
-  token.len_min[2] = 33;
+  token.len_min[2] = 32;
   token.len_max[2] = 49;
   token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH
                    | TOKEN_ATTR_VERIFY_BASE64A;