diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 7ea00d2..19e4b95 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -13781,13 +13781,13 @@
 requires_protocol_version tls12
 requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
-run_test    "Handshake defragmentation with server-initiated renegotiation: len=300" \
-            "$O_NEXT_SRV -tls1_2 -split_send_frag 300 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
-            "$P_CLI debug_level=3 renegotiation=1 request_page=/reneg" \
+run_test    "Handshake defragmentation with server-initiated renegotiation: len=256" \
+            "$O_NEXT_SRV -tls1_2 -split_send_frag 256 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
+            "$P_CLI debug_level=3 renegotiation=1 renego_delay=32 request_page=/reneg" \
             0 \
-            -c "initial handshake fragment: 300, 0..300 of [0-9]\\+" \
-            -c "Prepare: waiting for more handshake fragments 300/[0-9]\\+" \
-            -c "Consume: waiting for more handshake fragments 300/[0-9]\\+" \
+            -c "initial handshake fragment: 256, 0..256 of [0-9]\\+" \
+            -c "Prepare: waiting for more handshake fragments 256/[0-9]\\+" \
+            -c "Consume: waiting for more handshake fragments 256/[0-9]\\+" \
             -c "client hello, adding renegotiation extension" \
             -c "found renegotiation extension" \
             -c "=> renegotiate"
@@ -13807,38 +13807,6 @@
             -c "found renegotiation extension" \
             -c "=> renegotiate"
 
-# Mock negative test to demonstrate the failure with n-bit sized fragments, where ClientHello < n.
-requires_openssl_3_x
-requires_protocol_version tls12
-requires_certificate_authentication
-requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
-run_test    "Handshake defragmentation mock with server-initiated renegotation: len=256 renego_delay=default(16)" \
-            "$O_NEXT_SRV -tls1_2 -split_send_frag 256 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
-            "$P_CLI debug_level=3 renegotiation=1 request_page=/reneg" \
-            1 \
-            -c "initial handshake fragment: 256, 0..256 of [0-9]\\+" \
-            -c "Prepare: waiting for more handshake fragments 256/[0-9]\\+" \
-            -c "Consume: waiting for more handshake fragments 256/[0-9]\\+" \
-            -c "client hello, adding renegotiation extension" \
-            -c "found renegotiation extension" \
-            -c "renegotiation requested, but not honored by server"
-
-# Fixing the above mock negative using the new renego_delay parameter
-requires_openssl_3_x
-requires_protocol_version tls12
-requires_certificate_authentication
-requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
-run_test    "Handshake defragmentation mock with server-initiated renegotiation: len=256  renego_delay=32" \
-            "$O_NEXT_SRV -tls1_2 -split_send_frag 256 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
-            "$P_CLI debug_level=3 allow_legacy=1 renegotiation=1 renego_delay=32 request_page=/reneg" \
-            0 \
-            -c "initial handshake fragment: 200, 0..200 of [0-9]\\+" \
-            -c "Prepare: waiting for more handshake fragments 200/[0-9]\\+" \
-            -c "Consume: waiting for more handshake fragments 200/[0-9]\\+" \
-            -c "client hello, adding renegotiation extension" \
-            -c "found renegotiation extension" \
-            -c "=> renegotiate"
-
 # Test heap memory usage after handshake
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_config_enabled MBEDTLS_MEMORY_DEBUG