diff --git a/Source/CTest/Curl/config.h.in b/Source/CTest/Curl/config.h.in
index 9a61b06fe..560207fd4 100644
--- a/Source/CTest/Curl/config.h.in
+++ b/Source/CTest/Curl/config.h.in
@@ -168,6 +168,9 @@
 /* Define to 1 if you have the `gethostbyname_r' function. */
 #cmakedefine HAVE_GETHOSTBYNAME_R               ${HAVE_GETHOSTBYNAME_R}
 
+/* Define to 1 if you have the `gethostname' function. */
+#cmakedefine HAVE_GETHOSTNAME               ${HAVE_GETHOSTNAME}
+
 /* Define to 1 if you have the `getpass_r' function. */
 #cmakedefine HAVE_GETPASS_R             ${HAVE_GETPASS_R}