diff --git a/docs/content/reference/dynamic-configuration/file.yaml b/docs/content/reference/dynamic-configuration/file.yaml
index 2537abee7..2ad0a7b73 100644
--- a/docs/content/reference/dynamic-configuration/file.yaml
+++ b/docs/content/reference/dynamic-configuration/file.yaml
@@ -222,7 +222,7 @@ http:
       inFlightReq:
         amount: 42
         sourceCriterion:
-          ipstrategy:
+          ipStrategy:
             depth: 42
             excludedIPs:
             - foobar
@@ -259,7 +259,7 @@ http:
         period: 42
         burst: 42
         sourceCriterion:
-          ipstrategy:
+          ipStrategy:
             depth: 42
             excludedIPs:
             - foobar
diff --git a/pkg/config/dynamic/middlewares.go b/pkg/config/dynamic/middlewares.go
index 8727b818b..19e0a685d 100644
--- a/pkg/config/dynamic/middlewares.go
+++ b/pkg/config/dynamic/middlewares.go
@@ -300,7 +300,7 @@ type PassTLSClientCert struct {
 // If none are set, the default is to use the request's remote address field.
 // All fields are mutually exclusive.
 type SourceCriterion struct {
-	IPStrategy        *IPStrategy `json:"ipStrategy" toml:"ipStrategy, omitempty"`
+	IPStrategy        *IPStrategy `json:"ipStrategy,omitempty" toml:"ipStrategy,omitempty" yaml:"ipStrategy,omitempty"`
 	RequestHeaderName string      `json:"requestHeaderName,omitempty" toml:"requestHeaderName,omitempty" yaml:"requestHeaderName,omitempty"`
 	RequestHost       bool        `json:"requestHost,omitempty" toml:"requestHost,omitempty" yaml:"requestHost,omitempty"`
 }