diff --git a/docs/usermanual.md b/docs/usermanual.md
index fe31e97cb..6a7ae8215 100644
--- a/docs/usermanual.md
+++ b/docs/usermanual.md
@@ -319,7 +319,7 @@ hello
 
 then the resulting attribute sent to ContextBroker:
 
-{ ... "attrHex": { "value": "68656c6c6f" "type": "<the one used at provisiong time for attrHex attribute>" } }
+{ ... "attrHex": { "value": "68656c6c6f", "type": "<the one used at provisiong time for attrHex attribute>" } }
 
 Note that every group of 2 character (I.E, the first group, `68`) corresponds to a single ASCII character or byte
 received in the payload (in this case, the value `0x68` corresponds to `h` in ASCII). You can use one of the multiple