diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index a3cc0f2dea..58d2288f4a 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -5182,7 +5182,7 @@ os:scheduler_hints_query:
     Schedule the server by using a custom filter in JSON format.
     For example::
 
-      "query": "[>=,$free_ram_mb,1024]"
+      "query": "[\">=\",\"$free_ram_mb\",1024]"
 
     It is available when ``JsonFilter`` is available on cloud side.
   in: body
diff --git a/doc/source/admin/configuration/schedulers.rst b/doc/source/admin/configuration/schedulers.rst
index c48f592779..ae3fa1cc1f 100644
--- a/doc/source/admin/configuration/schedulers.rst
+++ b/doc/source/admin/configuration/schedulers.rst
@@ -601,7 +601,7 @@ With the API, use the ``os:scheduler_hints`` key:
            "flavorRef": "1"
        },
        "os:scheduler_hints": {
-           "query": "[>=,$free_ram_mb,1024]"
+           "query": "[\">=\",\"$free_ram_mb\",1024]"
        }
    }