1 files changed, 2 insertions, 2 deletions
diff --git a/cover.go b/cover.go
index ba2bc2a..a44ebab 100644
--- a/cover.go
+++ b/cover.go
@@ -38,7 +38,7 @@ func (s CoverValidationStatus) IsFinal() bool {
 
 // coverDimensionsReq is the json body of a /cover-dimensions/ request.
 type coverDimensionsReq struct {
-	PkgId  PkgId `json:"pod_package_id"`
+	Mfg    PkgId `json:"pod_package_id"`
 	NPages uint  `json:"interior_page_count"`
 	Unit   Unit  `json:"unit"`
 }
@@ -46,7 +46,7 @@ type coverDimensionsReq struct {
 // validateCoverReq is the json body of a /validate-cover/ request.
 type validateCoverReq struct {
 	SrcUrl string `json:"source_url"`
-	PkgId  PkgId  `json:"pod_package_id"`
+	Mfg    PkgId  `json:"pod_package_id"`
 	NPages uint   `json:"interior_page_count"`
 }