diff --git a/src/structs.h b/src/structs.h
index 809a2d1..64d903b 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -4309,3 +4309,9 @@
 // We have to guess how much a sequence of bytes may expand when converting
 // with iconv() to be able to allocate a buffer.
 #define ICONV_MULT 8
+
+typedef enum {
+    MAGIC_NOT_SET,	// p_magic not overruled
+    MAGIC_ON,		// magic on inside regexp
+    MAGIC_OFF		// magic off inside regexp
+} magic_T;