diff --git a/guile-readline/readline.c b/guile-readline/readline.c
index 07c365910..55e0a0dcf 100644
--- a/guile-readline/readline.c
+++ b/guile-readline/readline.c
@@ -22,6 +22,10 @@
 
 
 
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
 #include "libguile/_scm.h"
 #ifdef HAVE_RL_GETC_FUNCTION
 #include "libguile.h"