diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 76be941..3549a7b 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -7716,7 +7716,7 @@
                              MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
 run_test    "keyUsage cli 1.3: DigitalSignature+KeyEncipherment, RSA: OK" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key data_files/server2.key \
-             -cert data_files/server2.ku-ds_ke.crt" \
+             -cert data_files/server2-sha256.ku-ds_ke.crt" \
             "$P_CLI debug_level=3" \
             0 \
             -C "bad certificate (usage extensions)" \
@@ -7728,7 +7728,7 @@
                              MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
 run_test    "keyUsage cli 1.3: KeyEncipherment, RSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key data_files/server2.key \
-             -cert data_files/server2.ku-ke.crt" \
+             -cert data_files/server2-sha256.ku-ke.crt" \
             "$P_CLI debug_level=1" \
             1 \
             -c "bad certificate (usage extensions)" \
@@ -7740,7 +7740,7 @@
                              MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
 run_test    "keyUsage cli 1.3: KeyAgreement, RSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key data_files/server2.key \
-             -cert data_files/server2.ku-ka.crt" \
+             -cert data_files/server2-sha256.ku-ka.crt" \
             "$P_CLI debug_level=1" \
             1 \
             -c "bad certificate (usage extensions)" \
@@ -7839,7 +7839,7 @@
 run_test    "keyUsage cli-auth 1.3: RSA, DigitalSignature: OK" \
             "$P_SRV debug_level=1 force_version=tls13 auth_mode=optional" \
             "$O_NEXT_CLI_NO_CERT -key data_files/server2.key \
-             -cert data_files/server2.ku-ds.crt" \
+             -cert data_files/server2-sha256.ku-ds.crt" \
             0 \
             -s "Verifying peer X.509 certificate... ok" \
             -S "bad certificate (usage extensions)" \
@@ -7851,7 +7851,7 @@
 run_test    "keyUsage cli-auth 1.3: RSA, KeyEncipherment: fail (soft)" \
             "$P_SRV debug_level=1 force_version=tls13 auth_mode=optional" \
             "$O_NEXT_CLI_NO_CERT -key data_files/server2.key \
-             -cert data_files/server2.ku-ke.crt" \
+             -cert data_files/server2-sha256.ku-ke.crt" \
             0 \
             -s "bad certificate (usage extensions)" \
             -S "Processing of the Certificate handshake message failed"