diff --git a/configure.ac b/configure.ac
index 4c2adcc66..f957ce5ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,7 +259,7 @@ AC_CHECK_HEADER([regex.h],
 # Check for presense of various functions
 AC_CHECK_FUNCS( gettext wcsdup wcsndup wcslen wcscasecmp wcsncasecmp fwprintf )
 AC_CHECK_FUNCS( futimes wcwidth wcswidth getopt_long wcstok fputwc fgetwc )
-AC_CHECK_FUNCS( wcstol dcgettext wcslcat wcslcpy lrand48_r)
+AC_CHECK_FUNCS( wcstol dcgettext wcslcat wcslcpy lrand48_r killpg)
 
 # The Makefile also needs to know if we have gettext, so it knows if the translations should be installed.
 AC_CHECK_FUNC( gettext, AC_SUBST( HAVE_GETTEXT, 1 ), AC_SUBST( HAVE_GETTEXT, 0 ) )
diff --git a/fallback.c b/fallback.c
index 3167f4608..41f5a886f 100644
--- a/fallback.c
+++ b/fallback.c
@@ -25,6 +25,7 @@
 #include <dirent.h>
 #include <stdarg.h>
 #include <limits.h>
+#include <assert.h>
 
 #if HAVE_NCURSES_H
 #include <ncurses.h>
@@ -1076,3 +1077,10 @@ int _nl_msg_cat_cntr=0;
 
 #endif
 
+#ifndef HAVE_KILLPG
+int killpg( int pgr, int sig )
+{
+	assert( pgr > 0 );
+	return kill( -pgr, sig );
+}
+#endif
diff --git a/fallback.h b/fallback.h
index d9a119a82..c87145a18 100644
--- a/fallback.h
+++ b/fallback.h
@@ -376,5 +376,10 @@ extern int _nl_msg_cat_cntr;
 
 #endif
 
+
+#ifndef HAVE_KILLPG
+int killpg( int pgr, int sig );
+#endif
+
 #endif