diff --git a/docs/docs.go b/docs/docs.go
index 14bcfe1..5f9682a 100644
--- a/docs/docs.go
+++ b/docs/docs.go
@@ -418,13 +418,13 @@ const docTemplate = `{
         "userhandler.userPatchBody": {
             "type": "object",
             "properties": {
-                "activityLevel": {
+                "activity_level": {
                     "type": "number"
                 },
                 "birthdate": {
                     "type": "string"
                 },
-                "displayName": {
+                "display_name": {
                     "type": "string"
                 },
                 "sex": {
diff --git a/docs/swagger.json b/docs/swagger.json
index 624d2c3..f7ef03c 100644
--- a/docs/swagger.json
+++ b/docs/swagger.json
@@ -411,13 +411,13 @@
         "userhandler.userPatchBody": {
             "type": "object",
             "properties": {
-                "activityLevel": {
+                "activity_level": {
                     "type": "number"
                 },
                 "birthdate": {
                     "type": "string"
                 },
-                "displayName": {
+                "display_name": {
                     "type": "string"
                 },
                 "sex": {
diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 27ab54a..4ce6df5 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -75,11 +75,11 @@ definitions:
     type: object
   userhandler.userPatchBody:
     properties:
-      activityLevel:
+      activity_level:
         type: number
       birthdate:
         type: string
-      displayName:
+      display_name:
         type: string
       sex:
         type: string
diff --git a/internal/handlers/userhandler/patch.go b/internal/handlers/userhandler/patch.go
index 563a8d4..a12e8d6 100644
--- a/internal/handlers/userhandler/patch.go
+++ b/internal/handlers/userhandler/patch.go
@@ -11,12 +11,12 @@ import (
 )
 
 type userPatchBody struct {
-	DisplayName *string `json:"displayName,omitempty"`
+	DisplayName *string `json:"display_name,omitempty"`
 
 	Birthdate     *time.Time `json:"birthdate,omitempty"`
 	Sex           *string    `json:"sex,omitempty" binding:"omitempty,len=1"`
 	Weight        *float64   `json:"weight,omitempty"`
-	ActivityLevel *float64   `json:"activityLevel,omitempty"`
+	ActivityLevel *float64   `json:"activity_level,omitempty"`
 }
 
 // Patch godoc