diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4cb9837509..d3b4fc7564 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1014,6 +1014,7 @@ endif()
 check_symbol_exists(fchmod        "${CURL_INCLUDES}" HAVE_FCHMOD)
 check_symbol_exists(basename      "${CURL_INCLUDES}" HAVE_BASENAME)
 check_symbol_exists(socket        "${CURL_INCLUDES}" HAVE_SOCKET)
+check_symbol_exists(socketpair    "${CURL_INCLUDES}" HAVE_SOCKETPAIR)
 check_symbol_exists(recv          "${CURL_INCLUDES}" HAVE_RECV)
 check_symbol_exists(send          "${CURL_INCLUDES}" HAVE_SEND)
 check_symbol_exists(select        "${CURL_INCLUDES}" HAVE_SELECT)
diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index 3f7eb3c5db..5ac20dff0b 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -457,6 +457,9 @@
 /* Define to 1 if you have the `socket' function. */
 #cmakedefine HAVE_SOCKET 1
 
+/* Define to 1 if you have the socketpair function. */
+#cmakedefine HAVE_SOCKETPAIR 1
+
 /* Define to 1 if you have the <ssl.h> header file. */
 #cmakedefine HAVE_SSL_H 1