diff --git a/tests/opt-testcases/tls13-kex-modes.sh b/tests/opt-testcases/tls13-kex-modes.sh
index 758da1da5..ce10307ce 100755
--- a/tests/opt-testcases/tls13-kex-modes.sh
+++ b/tests/opt-testcases/tls13-kex-modes.sh
@@ -562,7 +562,7 @@ run_test    "TLS 1.3: G->m: psk_or_ephemeral/ephemeral_all, good" \
             -s "found pre_shared_key extension" \
             -S "Found PSK_EPHEMERAL KEX MODE" \
             -s "Found PSK KEX MODE" \
-            -s "Pre shared key found" \
+            -S "Pre shared key found" \
             -S "No matched PSK or ticket" \
             -S "key exchange mode: psk$"  \
             -S "key exchange mode: psk_ephemeral"  \
@@ -745,7 +745,7 @@ run_test    "TLS 1.3: G->m: ephemeral_all/psk_or_ephemeral, good" \
             -s "found pre_shared_key extension" \
             -s "Found PSK_EPHEMERAL KEX MODE" \
             -S "Found PSK KEX MODE" \
-            -s "Pre shared key found" \
+            -S "Pre shared key found" \
             -S "No matched PSK or ticket" \
             -S "key exchange mode: psk$"  \
             -S "key exchange mode: psk_ephemeral"  \
@@ -1425,7 +1425,7 @@ run_test    "TLS 1.3: O->m: ephemeral_all/psk_or_ephemeral, good" \
             -s "found pre_shared_key extension" \
             -s "Found PSK_EPHEMERAL KEX MODE" \
             -S "Found PSK KEX MODE" \
-            -s "Pre shared key found" \
+            -S "Pre shared key found" \
             -S "No matched PSK or ticket" \
             -S "key exchange mode: psk$"  \
             -S "key exchange mode: psk_ephemeral"  \