diff --git a/src/structs.h b/src/structs.h
index d241753..7e60a38 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1802,6 +1802,7 @@
     cryptstate_T *b_cryptstate;	/* Encryption state while reading or writing
 				 * the file. NULL when not using encryption. */
 #endif
+    int		b_mapped_ctrl_c; /* modes where CTRL-C is mapped */
 
 }; /* file_buffer */