diff --git a/backend/internal/dto/oidc_dto.go b/backend/internal/dto/oidc_dto.go
index 83f1bd25..c4197229 100644
--- a/backend/internal/dto/oidc_dto.go
+++ b/backend/internal/dto/oidc_dto.go
@@ -103,7 +103,7 @@ type OidcClientFederatedIdentityDto struct {
 	Subject          string            `json:"subject,omitempty"`
 	Audience         string            `json:"audience,omitempty"`
 	JWKS             string            `json:"jwks,omitempty"`
-	PublicKeys       []json.RawMessage `json:"publicKeys,omitempty"`
+	PublicKeys       []json.RawMessage `json:"publicKeys,omitempty" swaggertype:"array,object"`
 	ReplayProtection bool              `json:"replayProtection"`
 }
 
diff --git a/backend/internal/utils/jwk/public_key.go b/backend/internal/utils/jwk/public_key.go
index 8613b787..5da0502d 100644
--- a/backend/internal/utils/jwk/public_key.go
+++ b/backend/internal/utils/jwk/public_key.go
@@ -94,7 +94,7 @@ func NormalizePublicKeys(raw []json.RawMessage) ([]json.RawMessage, error) {
 		if err != nil {
 			return nil, fmt.Errorf("failed to encode key %d: %w", i+1, err)
 		}
-		normalized[i] = json.RawMessage(bytes.TrimSpace(encoded))
+		normalized[i] = bytes.TrimSpace(encoded)
 	}
 
 	return normalized, nil