1 files changed, 2 insertions, 1 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index e0e7404..b475655 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -801,7 +801,8 @@ target_link_libraries(tlslegacytest ${OPENSSL_TEST_LIBS})
 add_platform_test(tlslegacytest tlslegacytest)
 
 # tlstest
-if(NOT CMAKE_SYSTEM_NAME MATCHES "WindowsStore")
+# Emscripten does not support socketpair syscall.
+if(NOT (CMAKE_SYSTEM_NAME MATCHES "WindowsStore" OR EMSCRIPTEN))
         set(TLSTEST_SRC tlstest.c)
         check_function_exists(pipe2 HAVE_PIPE2)
         if(HAVE_PIPE2)