diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index d2aa57537915..79912ebc3d49 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -58,7 +58,7 @@ ecp_check_pub:MBEDTLS_ECP_DP_CURVE25519:"2":"0":"2":MBEDTLS_ERR_ECP_INVALID_KEY
 
 ECP check pubkey Curve25519 x negative
 depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
-ecp_check_pub:MBEDTLS_ECP_DP_CURVE25519:"-1":"0":"1":MBEDTLS_ERR_ECP_INVALID_KEY
+ecp_check_pub:MBEDTLS_ECP_DP_CURVE25519:"-2":"0":"1":MBEDTLS_ERR_ECP_INVALID_KEY
 
 # see https://cr.yp.to/ecdh.html#validate
 ECP check pubkey Curve25519 low-order point #1
@@ -142,7 +142,7 @@ ecp_check_pub:MBEDTLS_ECP_DP_CURVE448:"2":"0":"2":MBEDTLS_ERR_ECP_INVALID_KEY
 
 ECP check pubkey Curve448 x negative
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
-ecp_check_pub:MBEDTLS_ECP_DP_CURVE448:"-1":"0":"1":MBEDTLS_ERR_ECP_INVALID_KEY
+ecp_check_pub:MBEDTLS_ECP_DP_CURVE448:"-2":"0":"1":MBEDTLS_ERR_ECP_INVALID_KEY
 
 ECP check pubkey Curve448 low-order point #1
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED