diff --git a/library/regex/regcomp.c b/library/regex/regcomp.c
index ef3df12c6..062508d6f 100644
--- a/library/regex/regcomp.c
+++ b/library/regex/regcomp.c
@@ -42,7 +42,7 @@ static char sccsid[] = "@(#)regcomp.c	8.5 (Berkeley) 3/20/94";
 #endif /* LIBC_SCCS and not lint */
 
 #include "config.h"
-#include "c_interface.h"
+#include "YapInterface.h"
 #if HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif