diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+### 0.5.6.1
+
+- Fixed wrong partitioning of gauges and counters from *special* counters.
+
 ### 0.5.6.0
 
 - Added labeled parameterization for all supported types of metrics by using
diff --git a/NgxExport/Tools/Prometheus.hs b/NgxExport/Tools/Prometheus.hs
--- a/NgxExport/Tools/Prometheus.hs
+++ b/NgxExport/Tools/Prometheus.hs
@@ -459,7 +459,7 @@
                          cntsH'' = M.mapWithKey
                              (\k -> toHistogram cntsH' k . range) hs''
                      in (cntsH'', cntsC', cntsG')
-        (cntsOC, cntsOG) = M.partitionWithKey gCounter $ toValues ocnts
+        (cntsOG, cntsOC) = M.partitionWithKey gCounter $ toValues ocnts
         -- the _err counters from the Nginx custom counters module will be
         -- automatically deleted in such ordering of unions, but only if there
         -- are custom labels (i.e. annotations) for the given histogram
@@ -885,18 +885,18 @@
 -- $parameterization
 --
 -- In the previous examples we used many counters which served similar purposes.
--- For example, counters /cnt_4xx/, /cnt_5xx/, /cnt_u_4xx/, and /cnt_u_5xx/ all
+-- For example, counters /cnt_4xx/, /cnt_5xx/, /cnt_u_4xx/, and /cnt_u_5xx/
 -- counted response statuses in different conditions: particularly, the 2 former
 -- counters counted /4xx/ and /5xx/ response statuses sent to clients, while the
 -- latter 2 counters counted /4xx/ and /5xx/ response statuses received from the
--- upstreams. It looks like they could be shown as a single compound counter
--- parameterized by the value and the origin. We also had two histograms
--- /hst_request_time/ and /hst_u_response_time/ which could be combined in a
--- single entity parameterized by the scope (the time of the whole request
--- against the time spent in the upstream).
+-- upstream. It feels that they could be shown as a single compound counter
+-- parameterized by the range of values and the origin. We also had two
+-- histograms /hst_request_time/ and /hst_u_response_time/ which could also be
+-- combined in a single entity parameterized by the scope (the time of the whole
+-- request against the time spent in the upstream).
 --
 -- Fortunately, Prometheus provides a mechanism to make such custom
--- parameterizations by using metrics /labels/. This module supports the
+-- parameterizations by using /labels/ in metrics. This module supports the
 -- parameterization with labels by expecting special /annotations/ attached to
 -- the names of the counters.
 --
@@ -981,12 +981,13 @@
 --         }
 -- @
 --
--- Notice that the 4 status counters are combined into a compound counter
--- /cnt_status/ whose name gets annotated by a tail starting with __/\@/__.
--- This annotation will be put in the list of labels of the Prometheus metrics
--- with symbols __/(/__ and __/)/__ replaced with __/\"/__ but without any
--- further validation. The request time histograms and the corresponding sum
--- counters are annotated in a similar way.
+-- Notice that the 4 status counters were combined into a compound counter
+-- /cnt_status/ whose name was annotated by a tail starting with /\@/. This
+-- annotation gets put in the list of labels of the Prometheus metrics with
+-- symbols /(/ and /)/ replaced by /\"/ without any further validation. The
+-- request time histograms and the corresponding sum counters were annotated in
+-- a similar way. Annotations in histogram sum counters must be put between the
+-- base name of the counter and the suffix /_sum/.
 --
 -- ==== A simple test
 --
@@ -1053,6 +1054,6 @@
 -- > hst_request_time_count{scope="total"} 21
 -- > hst_request_time_sum{scope="total"} 7.02
 --
--- Notice that the histogram error counter from /nginx-custom-counters-module/
--- is not shown in annotated histograms.
+-- Notice that the histogram error counters from /nginx-custom-counters-module/
+-- are not shown in annotated histograms.
 
diff --git a/ngx-export-tools-extra.cabal b/ngx-export-tools-extra.cabal
--- a/ngx-export-tools-extra.cabal
+++ b/ngx-export-tools-extra.cabal
@@ -1,5 +1,5 @@
 name:                       ngx-export-tools-extra
-version:                    0.5.6.0
+version:                    0.5.6.1
 synopsis:                   More extra tools for Nginx haskell module
 description:                More extra tools for
         <https://github.com/lyokha/nginx-haskell-module Nginx haskell module>.
