diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index b37747e..895d8fc 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -7816,13 +7816,13 @@
 run_test    "keyUsage cli 1.3: KeyEncipherment, RSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key $DATA_FILES_PATH/server2.key \
              -cert $DATA_FILES_PATH/server2-sha256.ku-ke.crt" \
-            "$P_CLI debug_level=1" \
+            "$P_CLI debug_level=3" \
             1 \
             -c "bad certificate (usage extensions)" \
             -c "Processing of the Certificate handshake message failed" \
-            -C "Ciphersuite is"
-            #-c "send alert level=2 message=43" \
-            #-C "! Usage does not match the keyUsage extension"
+            -C "Ciphersuite is" \
+            -c "send alert level=2 message=43" \
+            -C "! Usage does not match the keyUsage extension"
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
 
 requires_openssl_tls1_3_with_compatible_ephemeral
@@ -7831,13 +7831,13 @@
 run_test    "keyUsage cli 1.3: KeyAgreement, RSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key $DATA_FILES_PATH/server2.key \
              -cert $DATA_FILES_PATH/server2-sha256.ku-ka.crt" \
-            "$P_CLI debug_level=1" \
+            "$P_CLI debug_level=3" \
             1 \
             -c "bad certificate (usage extensions)" \
             -c "Processing of the Certificate handshake message failed" \
-            -C "Ciphersuite is"
-            #-c "send alert level=2 message=43" \
-            #-C "! Usage does not match the keyUsage extension"
+            -C "Ciphersuite is" \
+            -c "send alert level=2 message=43" \
+            -C "! Usage does not match the keyUsage extension"
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
 
 requires_openssl_tls1_3_with_compatible_ephemeral
@@ -7858,13 +7858,13 @@
 run_test    "keyUsage cli 1.3: KeyEncipherment, ECDSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key $DATA_FILES_PATH/server5.key \
              -cert $DATA_FILES_PATH/server5.ku-ke.crt" \
-            "$P_CLI debug_level=1" \
+            "$P_CLI debug_level=3" \
             1 \
             -c "bad certificate (usage extensions)" \
             -c "Processing of the Certificate handshake message failed" \
-            -C "Ciphersuite is"
-            #-c "send alert level=2 message=43" \
-            #-C "! Usage does not match the keyUsage extension"
+            -C "Ciphersuite is" \
+            -c "send alert level=2 message=43" \
+            -C "! Usage does not match the keyUsage extension"
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
 
 requires_openssl_tls1_3_with_compatible_ephemeral
@@ -7873,13 +7873,13 @@
 run_test    "keyUsage cli 1.3: KeyAgreement, ECDSA: fail" \
             "$O_NEXT_SRV_NO_CERT -tls1_3 -num_tickets=0 -key $DATA_FILES_PATH/server5.key \
              -cert $DATA_FILES_PATH/server5.ku-ka.crt" \
-            "$P_CLI debug_level=1" \
+            "$P_CLI debug_level=3" \
             1 \
             -c "bad certificate (usage extensions)" \
             -c "Processing of the Certificate handshake message failed" \
-            -C "Ciphersuite is"
-            #-c "send alert level=2 message=43" \
-            #-C "! Usage does not match the keyUsage extension"
+            -C "Ciphersuite is" \
+            -c "send alert level=2 message=43" \
+            -C "! Usage does not match the keyUsage extension"
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
 
 # Tests for keyUsage in leaf certificates, part 3:
@@ -7985,8 +7985,8 @@
             0 \
             -s "bad certificate (usage extensions)" \
             -S "send alert level=2 message=43" \
+            -s "! Usage does not match the keyUsage extension" \
             -S "Processing of the Certificate handshake message failed"
-            #-s "! Usage does not match the keyUsage extension" \
 
 requires_openssl_tls1_3_with_compatible_ephemeral
 requires_all_configs_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE \
@@ -7998,10 +7998,9 @@
             0 \
             -s "bad certificate (usage extensions)" \
             -s "Processing of the Certificate handshake message failed" \
-            -s "! mbedtls_ssl_handshake returned" \
-            #-s "send alert level=2 message=43" \
+            -s "send alert level=2 message=43" \
+            -s "! mbedtls_ssl_handshake returned"
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
-            # (not working now, getting alert 46 instead)
             #
             # OpenSSL client does not seem to mind that the server aborts the
             # handshake with a fatal alert and still exits 0...
@@ -8027,8 +8026,8 @@
              -cert $DATA_FILES_PATH/server5.ku-ka.crt" \
             0 \
             -s "bad certificate (usage extensions)" \
+            -s "! Usage does not match the keyUsage extension" \
             -S "Processing of the Certificate handshake message failed"
-            #-s "! Usage does not match the keyUsage extension" \
 
 requires_openssl_tls1_3_with_compatible_ephemeral
 requires_all_configs_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE \
@@ -8040,10 +8039,9 @@
             0 \
             -s "bad certificate (usage extensions)" \
             -s "Processing of the Certificate handshake message failed" \
+            -s "send alert level=2 message=43" \
             -s "! mbedtls_ssl_handshake returned"
-            #-s "send alert level=2 message=43" \
             # MBEDTLS_X509_BADCERT_KEY_USAGE -> MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_CERT
-            # (not working now, getting alert 46 instead)
             #
             # OpenSSL client does not seem to mind that the server aborts the
             # handshake with a fatal alert and still exits 0...