diff --git a/tinycrypt/ecc_dsa.c b/tinycrypt/ecc_dsa.c
index 7d40534..6a93705 100644
--- a/tinycrypt/ecc_dsa.c
+++ b/tinycrypt/ecc_dsa.c
@@ -298,7 +298,7 @@
 	}
 
 	/* Accept only if v == r. */
-	return (int)(uECC_vli_equal(rx, r, num_words) == 0);
+	return (int)(uECC_vli_equal(rx, r) == 0);
 }
 #else
 typedef int mbedtls_dummy_tinycrypt_def;