diff --git a/ncat/config.h.in b/ncat/config.h.in
index 6f85afa46..ac1b44957 100644
--- a/ncat/config.h.in
+++ b/ncat/config.h.in
@@ -159,9 +159,6 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* Define as the return type of signal handlers (`int' or `void'). */
-#undef RETSIGTYPE
-
 /* Define to the type of arg 1 for `select'. */
 #undef SELECT_TYPE_ARG1
 
diff --git a/ncat/configure b/ncat/configure
index 35eb23b0c..238a63daa 100755
--- a/ncat/configure
+++ b/ncat/configure
@@ -4614,39 +4614,6 @@ printf "%s\n" "#define SELECT_TYPE_ARG5 ($3)" >>confdefs.h
 
 rm -rf conftest*
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
-printf %s "checking return type of signal handlers... " >&6; }
-if test ${ac_cv_type_signal+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <signal.h>
-
-int
-main (void)
-{
-return *(signal (0, 0)) (0) == 1;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"
-then :
-  ac_cv_type_signal=int
-else $as_nop
-  ac_cv_type_signal=void
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_signal" >&5
-printf "%s\n" "$ac_cv_type_signal" >&6; }
-
-printf "%s\n" "#define RETSIGTYPE $ac_cv_type_signal" >>confdefs.h
-
-
 
 
 if test "x$ac_cv_func_vprintf" = xno
diff --git a/ncat/configure.ac b/ncat/configure.ac
index 26b70895a..22b049cc6 100644
--- a/ncat/configure.ac
+++ b/ncat/configure.ac
@@ -4,7 +4,7 @@
 AC_PREREQ(2.59)
 AC_INIT(ncat_main.c)
 
-AC_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 m4_include([../acinclude.m4])
 m4_include([../m4/ax_check_compile_flag.m4])
@@ -49,7 +49,6 @@ AC_C_CONST
 # Checks for library functions.
 AC_FUNC_FORK
 AC_FUNC_SELECT_ARGTYPES
-AC_TYPE_SIGNAL
 AC_FUNC_VPRINTF
 AC_SEARCH_LIBS(setsockopt, socket)
 # Ncat does not call gethostbyname directly, but some of the libraries