diff --git a/legacy/embryo/src/bin/embryo_cc_scvars.c b/legacy/embryo/src/bin/embryo_cc_scvars.c
index 163bbc9776..7a9e086eeb 100644
--- a/legacy/embryo/src/bin/embryo_cc_scvars.c
+++ b/legacy/embryo/src/bin/embryo_cc_scvars.c
@@ -27,7 +27,10 @@
  * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
  */
 
-#include <config.h>		/* for PATH_MAX */
+#ifdef HAVE_CONFIG_H
+# include <config.h>		/* for PATH_MAX */
+#endif
+
 #include "embryo_cc_sc.h"
 
 /*  global variables