diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 2f89ece..c3f7c25 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -2722,6 +2722,7 @@
             0
 
 # Tests for certificate verification callback
+requires_key_exchange_with_cert_in_tls12_or_tls13_enabled
 run_test    "Configuration-specific CRT verification callback" \
             "$P_SRV debug_level=3" \
             "$P_CLI context_crt_cb=0 debug_level=3" \
@@ -2732,6 +2733,7 @@
             -C "Use context-specific verification callback" \
             -C "error"
 
+requires_key_exchange_with_cert_in_tls12_or_tls13_enabled
 run_test    "Context-specific CRT verification callback" \
             "$P_SRV debug_level=3" \
             "$P_CLI context_crt_cb=1 debug_level=3" \