diff --git a/libguile/scmsigs.c b/libguile/scmsigs.c
index e2cc1e84b..2df139631 100644
--- a/libguile/scmsigs.c
+++ b/libguile/scmsigs.c
@@ -23,7 +23,6 @@
 #endif
 
 #include <fcntl.h>      /* for mingw */
-#include <process.h>    /* for mingw */
 #include <signal.h>
 #include <stdio.h>
 #include <errno.h>
@@ -38,6 +37,14 @@
 #include "libguile/validate.h"
 #include "libguile/scmsigs.h"
 
+#ifdef HAVE_IO_H
+#include <io.h>  /* for mingw _pipe() */
+#endif
+
+#ifdef HAVE_PROCESS_H
+#include <process.h>    /* for mingw */
+#endif
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif