diff --git a/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_try.c b/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_try.c
index 3137b7ad..b750264b 100644
--- a/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_try.c
+++ b/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_try.c
@@ -146,6 +146,7 @@ crypto_onetimeauth_pick_best_implementation(void)
         if (allocate() != 0) {
             return NULL;
         }
+        doit();
         err = checksum_compute();
         deallocate();
         if (err == NULL && strcmp(checksum, CHECKSUM) == 0) {