diff --git a/internal/services/containerapps/container_app_environment_certificate_resource.go b/internal/services/containerapps/container_app_environment_certificate_resource.go
index 89062c0e65e1..3146d5a460a1 100644
--- a/internal/services/containerapps/container_app_environment_certificate_resource.go
+++ b/internal/services/containerapps/container_app_environment_certificate_resource.go
@@ -207,6 +207,7 @@ func (r ContainerAppEnvironmentCertificateResource) Read() sdk.ResourceFunc {
 				}
 
 				if props := model.Properties; props != nil {
+					state.SubjectName = pointer.From(props.SubjectName)
 					state.Issuer = pointer.From(props.Issuer)
 					state.IssueDate = pointer.From(props.IssueDate)
 					state.ExpirationDate = pointer.From(props.ExpirationDate)