diff --git a/internal/api/httpinvoce/controller.go b/internal/api/httpinvoce/controller.go
index 93cbdc4..6e9f850 100644
--- a/internal/api/httpinvoce/controller.go
+++ b/internal/api/httpinvoce/controller.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"log"
 	"net/http"
 	"time"
 
@@ -19,26 +18,24 @@ func (s Service) createInvoice(w http.ResponseWriter, r *http.Request) {
 
 	err := json.NewDecoder(r.Body).Decode(&req)
 	if err != nil {
-		s.sendErrf(w, http.StatusBadRequest, "cannot read body: %v", err)
+		s.sendErr(w, http.StatusBadRequest, "cannot read body")
 		return
 	}
 
 	repos, err := req.GetRepos()
 	if err != nil {
-		s.sendErr(w, 500, err.Error())
+		s.sendErr(w, http.StatusInternalServerError, "cannot get repos")
 		return
 	}
 
 	invoice, report, err := s.invoice.Generate(req.Creditor, req.Debtor, time.Duration(req.DurationThreshold), req.HourlyRate, repos)
 	if err != nil {
-		log.Println("error while processing invoice:", err)
-		fmt.Fprint(w, "internal server error")
-		w.WriteHeader(http.StatusInternalServerError)
+		s.sendErr(w, http.StatusInternalServerError, "internal server error")
 		return
 	}
 	// if no time has to be billed aka if bill for 0 CHF
 	if report.Total() <= time.Duration(0) {
-		s.sendErr(w, http.StatusNotFound, "no suitable issues to be billed")
+		s.sendErrf(w, http.StatusNotFound, "no suitable issues to be billed")
 		return
 	}
 
diff --git a/internal/api/httpinvoce/controller_test.go b/internal/api/httpinvoce/controller_test.go
index 97e6321..9cb6168 100644
--- a/internal/api/httpinvoce/controller_test.go
+++ b/internal/api/httpinvoce/controller_test.go
@@ -14,7 +14,6 @@ import (
 	"time"
 
 	"git.schreifuchs.ch/lou-taylor/accounting/internal/email"
-	"git.schreifuchs.ch/lou-taylor/accounting/internal/jtype"
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice"
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice/issue"
 	"git.schreifuchs.ch/lou-taylor/accounting/pkg/invoice/model"
@@ -106,7 +105,7 @@ func TestCreateInvoice(t *testing.T) {
 				Debtor:   model.Entity{Name: "Debtor"},
 				DurationThreshold: "1h", // Changed to string
 				HourlyRate: 100,
-				Repos: []string{"repo1"},
+				Repos: []string{"owner/repo1"},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
 				pdfContent := "mock PDF content"
@@ -124,7 +123,7 @@ func TestCreateInvoice(t *testing.T) {
 				Debtor:   model.Entity{Name: "Debtor"},
 				DurationThreshold: "invalid", // Changed to string
 				HourlyRate: 100,
-				Repos: []string{"repo1"},
+				Repos: []string{"owner/repo1"},
 			},
 			mockGenerate: nil, // Not called for invalid body
 			expectedStatus: http.StatusBadRequest,
@@ -137,7 +136,7 @@ func TestCreateInvoice(t *testing.T) {
 				Debtor:   model.Entity{Name: "Debtor"},
 				DurationThreshold: "1h", // Changed to string
 				HourlyRate: 100,
-				Repos: []string{"repo1"},
+				Repos: []string{"owner/repo1"},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
 				return nil, nil, errors.New("failed to generate invoice")
@@ -152,7 +151,7 @@ func TestCreateInvoice(t *testing.T) {
 				Debtor:   model.Entity{Name: "Debtor"},
 				DurationThreshold: "1h", // Changed to string
 				HourlyRate: 100,
-				Repos: []string{"repo1"},
+				Repos: []string{"owner/repo1"},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
 				// Create a report with zero total duration
@@ -213,7 +212,7 @@ func TestSendInvoice(t *testing.T) {
 					Debtor:   model.Entity{Name: "Debtor"},
 					DurationThreshold: "1h", // Changed to string
 					HourlyRate: 100,
-					Repos: []string{"repo1"},
+					Repos: []string{"owner/repo1"},
 				},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
@@ -238,7 +237,7 @@ func TestSendInvoice(t *testing.T) {
 					Debtor:   model.Entity{Name: "Debtor"},
 					DurationThreshold: "1h", // Changed to string
 					HourlyRate: 100,
-					Repos: []string{"repo1"},
+					Repos: []string{"owner/repo1"},
 				},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
@@ -259,7 +258,7 @@ func TestSendInvoice(t *testing.T) {
 					Debtor:   model.Entity{Name: "Debtor"},
 					DurationThreshold: "1h", // Changed to string
 					HourlyRate: 100,
-					Repos: []string{"repo1"},
+					Repos: []string{"owner/repo1"},
 				},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
@@ -284,7 +283,7 @@ func TestSendInvoice(t *testing.T) {
 					Debtor:   model.Entity{Name: "Debtor"},
 					DurationThreshold: "1h", // Changed to string
 					HourlyRate: 100,
-					Repos: []string{"repo1"},
+					Repos: []string{"owner/repo1"},
 				},
 			},
 			mockGenerate: func(creditor, debtor model.Entity, durationThreshold time.Duration, hourlyRate float64, repos []invoice.Repo) (io.ReadCloser, *report.Report, error) {
diff --git a/internal/api/httpinvoce/model.go b/internal/api/httpinvoce/model.go
index bb98e29..c891ef6 100644
--- a/internal/api/httpinvoce/model.go
+++ b/internal/api/httpinvoce/model.go
@@ -57,13 +57,13 @@ func (s sendReq) ToEMail() email.Mail {
 func (s *Service) sendErrf(w http.ResponseWriter, statusCode int, format string, a ...any) {
 	msg := fmt.Sprintf(format, a...)
 	s.log.Error(msg, slog.Any("statusCode", statusCode))
-	w.Write([]byte(msg))
 	w.WriteHeader(statusCode)
+	w.Write([]byte(msg))
 }
 
 func (s *Service) sendErr(w http.ResponseWriter, statusCode int, a ...any) {
 	msg := fmt.Sprint(a...)
 	s.log.Error(msg, slog.Any("statusCode", statusCode))
-	w.Write([]byte(msg))
 	w.WriteHeader(statusCode)
+	w.Write([]byte(msg))
 }