Standardize WITH_* make variables for configuring dependencies

1 files changed, 1 insertions, 1 deletions

diff --git a/expr.h b/expr.h
index a4e6c0d..6f0ebec 100644
--- a/expr.h
+++ b/expr.h
@@ -25,7 +25,7 @@
 #include "eval.h"
 #include "exec.h"
 #include "printf.h"
-#include "regexp.h"
+#include "regex.h"
 #include "stat.h"
 #include <stdbool.h>
 #include <stddef.h>