diff --git a/libguile/strop.c b/libguile/strop.c
index f42046ba1..7a7247190 100644
--- a/libguile/strop.c
+++ b/libguile/strop.c
@@ -41,9 +41,10 @@ If you write modifications of your own for GUILE, it is your choice
 whether to permit this exception to apply to your modifications.
 If you do not wish that, delete this exception notice.  */
 
-
-
 
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
 
 #include <errno.h>