diff --git a/libhttpd.c b/libhttpd.c
index 6a985f8601d0ccfc..7c3ae74d0cda56d1 100644
--- a/libhttpd.c
+++ b/libhttpd.c
@@ -47,7 +47,12 @@
 #include <memory.h>
 #endif /* HAVE_MEMORY_H */
 #include <pwd.h>
+
 #include <signal.h>
+/* Not available with glibc default feature test macros.  Kludge to
+   avoid extensive changes.  */
+extern __typeof (signal) sigset;
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/thttpd.c b/thttpd.c
index bfb57bacd955cd1b..25ad5d4cd47dc094 100644
--- a/thttpd.c
+++ b/thttpd.c
@@ -44,7 +44,12 @@
 #ifdef HAVE_GRP_H
 #include <grp.h>
 #endif
+
 #include <signal.h>
+/* Not available with glibc default feature test macros.  Kludge to
+   avoid extensive changes.  */
+extern __typeof (signal) sigset;
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>