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--- a/src/rcldb/rcldoc.h
+++ b/src/rcldb/rcldoc.h
@@ -135,7 +135,7 @@
 	xdocid = 0;
     }
 
-    void dump(bool dotext=false);
+    void dump(bool dotext=false) const;
 
     // The official names for recoll native fields when used in a text
     // context (ie: the python interface duplicates some of the fixed