diff --git a/anyoption.h b/anyoption.h
index f4fd84c..1d1240d 100644
--- a/anyoption.h
+++ b/anyoption.h
@@ -24,11 +24,13 @@
 #define FILE_FLAG_TYPE 4
 #define UNKNOWN_TYPE 5
 
-#define DEFAULT_MAXOPTS 10
-#define MAX_LONG_PREFIX_LENGTH 2
+enum {
+	DEFAULT_MAXOPTS=10,
+	MAX_LONG_PREFIX_LENGTH=2,
 
-#define DEFAULT_MAXUSAGE 3
-#define DEFAULT_MAXHELP 10
+	DEFAULT_MAXUSAGE=3,
+	DEFAULT_MAXHELP=10,
+};
 
 #define TRUE_FLAG "true"