diff --git a/src/ebusd/mainloop.h b/src/ebusd/mainloop.h
index 483310d4..7e5b8500 100644
--- a/src/ebusd/mainloop.h
+++ b/src/ebusd/mainloop.h
@@ -111,9 +111,10 @@ private:
 	 * @param master the master data @a SymbolString for writing symbols to.
 	 * @param inputStr the input @a string from which to read master values (if any).
 	 * @param slave the @a SymbolString that will be filled with retrieved slave data.
+	 * @param dstAddress the destination address to set, or @a SYN to keep the address defined during construction.
 	 * @return the result code.
 	 */
-	result_t readFromBus(Message* message, SymbolString& master, string inputStr, SymbolString& slave);
+	result_t readFromBus(Message* message, SymbolString& master, string inputStr, SymbolString& slave, const unsigned char dstAddress=SYN);
 
 	/**
 	 * Execute the read command.