diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 74bc24a..2413ee9 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -9796,7 +9796,8 @@
 requires_config_enabled MBEDTLS_SSL_CLI_C
 run_test    "TLS 1.3: CertificateRequest check - openssl" \
             "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache -Verify 10" \
-            "$P_CLI debug_level=4 force_version=tls13 " \
+            "$P_CLI debug_level=4 force_version=tls13 crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             1 \
             -c "=> parse certificate request" \
             -c "got a certificate request" \
@@ -9812,7 +9813,8 @@
 requires_config_enabled MBEDTLS_SSL_CLI_C
 run_test    "TLS 1.3: CertificateRequest check - gnutls" \
             "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS" \
-            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13 crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             1 \
             -c "=> parse certificate request" \
             -c "got a certificate request" \
@@ -9827,7 +9829,8 @@
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check, no middlebox - openssl" \
             "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache -Verify 10 -no_middlebox" \
-            "$P_CLI debug_level=4 force_version=tls13 " \
+            "$P_CLI debug_level=4 force_version=tls13  crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             1 \
             -c "=> parse certificate request" \
             -c "got a certificate request" \
@@ -9843,7 +9846,8 @@
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check, no middlebox - gnutls" \
             "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
-            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13 crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             1 \
             -c "=> parse certificate request" \
             -c "got a certificate request" \
@@ -9858,7 +9862,8 @@
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check, no client certificate - openssl" \
             "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache -no_middlebox" \
-            "$P_CLI debug_level=4 force_version=tls13 " \
+            "$P_CLI debug_level=4 force_version=tls13 crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             0 \
             -c "=> parse certificate request" \
             -c "got no certificate request" \
@@ -9874,7 +9879,8 @@
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check, no client certificate - gnutls" \
             "$G_NEXT_SRV --disable-client-cert --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
-            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13 crt_file=data_files/cli2.crt \
+                    key_file=data_files/cli2.key" \
             0 \
             -c "=> parse certificate request" \
             -c "got no certificate request" \