diff --git a/CMakeLists.txt b/CMakeLists.txt
index 51d9ea427..cdfe1d256 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2591,6 +2591,7 @@ if(WOLFSSL_EXAMPLES)
         tests/api/test_dtls.c
         tests/api/test_ocsp.c
         tests/api/test_evp.c
+        tests/api/test_tls_ext.c
         tests/srp.c
         tests/suites.c
         tests/w64wrapper.c
diff --git a/tests/api.c b/tests/api.c
index 0a0913586..ca24cce3f 100644
--- a/tests/api.c
+++ b/tests/api.c
@@ -323,6 +323,7 @@
 #include <tests/api/test_dtls.h>
 #include <tests/api/test_ocsp.h>
 #include <tests/api/test_evp.h>
+#include <tests/api/test_tls_ext.h>
 
 #if !defined(NO_FILESYSTEM) && !defined(NO_CERTS) && !defined(NO_TLS) && \
     !defined(NO_RSA)        && !defined(SINGLE_THREADED) && \
@@ -12864,31 +12865,6 @@ static int test_wolfSSL_set_alpn_protos(void)
 
 #endif /* HAVE_ALPN_PROTOS_SUPPORT */
 
-static int test_wolfSSL_DisableExtendedMasterSecret(void)
-{
-    EXPECT_DECLS;
-#if defined(HAVE_EXTENDED_MASTER) && !defined(NO_WOLFSSL_CLIENT) && \
-    !defined(NO_TLS)
-    WOLFSSL_CTX *ctx = wolfSSL_CTX_new(wolfSSLv23_client_method());
-    WOLFSSL     *ssl = wolfSSL_new(ctx);
-
-    ExpectNotNull(ctx);
-    ExpectNotNull(ssl);
-
-    /* error cases */
-    ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(NULL));
-    ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(NULL));
-
-    /* success cases */
-    ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(ctx));
-    ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(ssl));
-
-    wolfSSL_free(ssl);
-    wolfSSL_CTX_free(ctx);
-#endif
-    return EXPECT_RESULT();
-}
-
 static int test_wolfSSL_wolfSSL_UseSecureRenegotiation(void)
 {
     EXPECT_DECLS;
diff --git a/tests/api/include.am b/tests/api/include.am
index 8b9f863b4..15e28235c 100644
--- a/tests/api/include.am
+++ b/tests/api/include.am
@@ -52,6 +52,7 @@ tests_unit_test_SOURCES += tests/api/test_dtls.c
 # TLS Feature
 tests_unit_test_SOURCES += tests/api/test_ocsp.c
 tests_unit_test_SOURCES += tests/api/test_evp.c
+tests_unit_test_SOURCES += tests/api/test_tls_ext.c
 endif
 
 EXTRA_DIST += tests/api/api.h
@@ -101,4 +102,5 @@ EXTRA_DIST += tests/api/test_ocsp.h
 EXTRA_DIST += tests/api/test_ocsp_test_blobs.h
 EXTRA_DIST += tests/api/create_ocsp_test_blobs.py
 EXTRA_DIST += tests/api/test_evp.h
+EXTRA_DIST += tests/api/test_tls_ext.h
 
diff --git a/tests/api/test_tls_ext.c b/tests/api/test_tls_ext.c
new file mode 100644
index 000000000..ed57f075f
--- /dev/null
+++ b/tests/api/test_tls_ext.c
@@ -0,0 +1,64 @@
+/* test_tls_ems.c
+ *
+ * Copyright (C) 2006-2025 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#if !defined(WOLFSSL_USER_SETTINGS) && !defined(WOLFSSL_NO_OPTIONS_H)
+    #include <wolfssl/options.h>
+#endif
+#include <wolfssl/wolfcrypt/settings.h>
+
+#ifdef NO_INLINE
+    #include <wolfssl/wolfcrypt/misc.h>
+#else
+    #define WOLFSSL_MISC_INCLUDED
+    #include <wolfcrypt/src/misc.c>
+#endif
+
+#include <tests/unit.h>
+#include <tests/api/test_tls_ext.h>
+
+int test_wolfSSL_DisableExtendedMasterSecret(void)
+{
+    EXPECT_DECLS;
+#if defined(HAVE_EXTENDED_MASTER) && !defined(NO_WOLFSSL_CLIENT) && \
+    !defined(NO_TLS)
+    WOLFSSL_CTX *ctx = wolfSSL_CTX_new(wolfSSLv23_client_method());
+    WOLFSSL     *ssl = wolfSSL_new(ctx);
+
+    ExpectNotNull(ctx);
+    ExpectNotNull(ssl);
+
+    /* error cases */
+    ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(NULL));
+    ExpectIntNE(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(NULL));
+
+    /* success cases */
+    ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_CTX_DisableExtendedMasterSecret(ctx));
+    ExpectIntEQ(WOLFSSL_SUCCESS, wolfSSL_DisableExtendedMasterSecret(ssl));
+
+    wolfSSL_free(ssl);
+    wolfSSL_CTX_free(ctx);
+#endif
+    return EXPECT_RESULT();
+}
diff --git a/tests/api/test_tls_ext.h b/tests/api/test_tls_ext.h
new file mode 100644
index 000000000..49bd5c038
--- /dev/null
+++ b/tests/api/test_tls_ext.h
@@ -0,0 +1,27 @@
+/* test_tls_ems.h
+ *
+ * Copyright (C) 2006-2025 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+#ifndef TESTS_API_TEST_TLS_EMS_H
+#define TESTS_API_TEST_TLS_EMS_H
+
+int test_wolfSSL_DisableExtendedMasterSecret(void);
+
+#endif /* TESTS_API_TEST_TLS_EMS_H */