diff --git a/api/docs.go b/api/docs.go
index 063505483..97a0f411a 100644
--- a/api/docs.go
+++ b/api/docs.go
@@ -3597,12 +3597,12 @@ const docTemplate = `{
         "api.CreateUploadRequest": {
             "type": "object",
             "required": [
-                "chunkSize",
+                "chunk_size",
                 "sha256",
                 "size"
             ],
             "properties": {
-                "chunkSize": {
+                "chunk_size": {
                     "description": "Size of the chunk",
                     "type": "integer"
                 },
diff --git a/api/openapi.json b/api/openapi.json
index 6df6f958e..706043619 100644
--- a/api/openapi.json
+++ b/api/openapi.json
@@ -72,7 +72,7 @@
             },
             "api.CreateUploadRequest": {
                 "properties": {
-                    "chunkSize": {
+                    "chunk_size": {
                         "description": "Size of the chunk",
                         "type": "integer"
                     },
@@ -86,7 +86,7 @@
                     }
                 },
                 "required": [
-                    "chunkSize",
+                    "chunk_size",
                     "sha256",
                     "size"
                 ],
diff --git a/pkg/api/pulp.go b/pkg/api/pulp.go
index d32941e3d..f18974cf3 100644
--- a/pkg/api/pulp.go
+++ b/pkg/api/pulp.go
@@ -1,9 +1,9 @@
 package api
 
 type CreateUploadRequest struct {
-	Size      int64  `json:"size" validate:"required"`      // Size of the upload in bytes
-	ChunkSize int64  `json:"chunkSize" validate:"required"` // Size of the chunk
-	Sha256    string `json:"sha256" validate:"required"`    // SHA-256 checksum of the file
+	Size      int64  `json:"size" validate:"required"`       // Size of the upload in bytes
+	ChunkSize int64  `json:"chunk_size" validate:"required"` // Size of the chunk
+	Sha256    string `json:"sha256" validate:"required"`     // SHA-256 checksum of the file
 }
 
 type PulpUploadChunkRequest struct {