diff --git a/src/proto/misc1.pro b/src/proto/misc1.pro
index 58c3d3f..4a903d2 100644
--- a/src/proto/misc1.pro
+++ b/src/proto/misc1.pro
@@ -35,6 +35,7 @@
 void changed(void);
 void changed_int(void);
 void changed_bytes(linenr_T lnum, colnr_T col);
+void inserted_bytes(linenr_T lnum, colnr_T col, int added);
 void appended_lines(linenr_T lnum, long count);
 void appended_lines_mark(linenr_T lnum, long count);
 void deleted_lines(linenr_T lnum, long count);