diff --git a/z/database.go b/z/database.go
index 4cabf9c..307f6e7 100644
--- a/z/database.go
+++ b/z/database.go
@@ -35,7 +35,7 @@ func InitDatabase() (*Database, error) {
 func (database *Database) NewID() (string) {
   id, err := uuid.NewRandom()
   if err != nil {
-    log.Fatalln("Could not generate UUID: %+v", err)
+    log.Fatalln("could not generate UUID: %+v", err)
   }
   return id.String()
 }
@@ -91,11 +91,11 @@ func (database *Database) FinishEntry(user string, entry Entry) (string, error)
   dberr := database.DB.Update(func(tx *buntdb.Tx) error {
     runningEntryId, grerr := tx.Get(user + ":status:running")
     if grerr != nil {
-      return errors.New("No currently running entry found!")
+      return errors.New("no currently running entry found!")
     }
 
     if runningEntryId != entry.ID {
-      return errors.New("Specified entry is not currently running!")
+      return errors.New("specified entry is not currently running!")
     }
 
     _, _, srerr := tx.Set(user + ":status:running", "", nil)
diff --git a/z/entry.go b/z/entry.go
index c6e840b..c033976 100644
--- a/z/entry.go
+++ b/z/entry.go
@@ -103,14 +103,14 @@ func (entry *Entry) GetOutputForTrack(isRunning bool, wasRunning bool) (string)
   }
 
   if entry.Task != "" && entry.Project != "" {
-    return fmt.Sprintf("▷ %s %s on %s%s\n", outputPrefix, color.FgLightWhite.Render(entry.Task), color.FgLightWhite.Render(entry.Project), outputSuffix)
+    return fmt.Sprintf("%s %s %s on %s%s\n", CharTrack, outputPrefix, color.FgLightWhite.Render(entry.Task), color.FgLightWhite.Render(entry.Project), outputSuffix)
   } else if entry.Task != "" && entry.Project == "" {
-    return fmt.Sprintf("▷ %s %s%s\n", outputPrefix, color.FgLightWhite.Render(entry.Task), outputSuffix)
+    return fmt.Sprintf("%s %s %s%s\n", CharTrack, outputPrefix, color.FgLightWhite.Render(entry.Task), outputSuffix)
   } else if entry.Task == "" && entry.Project != "" {
-    return fmt.Sprintf("▷ %s task on %s%s\n", outputPrefix, color.FgLightWhite.Render(entry.Project), outputSuffix)
+    return fmt.Sprintf("%s %s task on %s%s\n", CharTrack, outputPrefix, color.FgLightWhite.Render(entry.Project), outputSuffix)
   }
 
-  return fmt.Sprintf("▷ %s task%s\n", outputPrefix, outputSuffix)
+  return fmt.Sprintf("%s %s task%s\n", CharTrack, outputPrefix, outputSuffix)
 }
 
 func (entry *Entry) GetOutputForFinish() (string) {
@@ -122,12 +122,12 @@ func (entry *Entry) GetOutputForFinish() (string) {
   outputSuffix = fmt.Sprintf(" for %sh", color.FgLightWhite.Render(trackDiffOut.Format("15:04")))
 
   if entry.Task != "" && entry.Project != "" {
-    return fmt.Sprintf("□ finished tracking %s on %s%s\n", color.FgLightWhite.Render(entry.Task), color.FgLightWhite.Render(entry.Project), outputSuffix)
+    return fmt.Sprintf("%s finished tracking %s on %s%s\n", CharFinish, color.FgLightWhite.Render(entry.Task), color.FgLightWhite.Render(entry.Project), outputSuffix)
   } else if entry.Task != "" && entry.Project == "" {
-    return fmt.Sprintf("□ finished tracking %s%s\n", color.FgLightWhite.Render(entry.Task), outputSuffix)
+    return fmt.Sprintf("%s finished tracking %s%s\n", CharFinish, color.FgLightWhite.Render(entry.Task), outputSuffix)
   } else if entry.Task == "" && entry.Project != "" {
-    return fmt.Sprintf("□ finished tracking task on %s%s\n", color.FgLightWhite.Render(entry.Project), outputSuffix)
+    return fmt.Sprintf("%s finished tracking task on %s%s\n", CharFinish, color.FgLightWhite.Render(entry.Project), outputSuffix)
   }
 
-  return fmt.Sprintf("□ finished tracking task%s\n", outputSuffix)
+  return fmt.Sprintf("%s finished tracking task%s\n", CharFinish, outputSuffix)
 }
diff --git a/z/finish.go b/z/finish.go
index 8bfd3ef..5beef84 100644
--- a/z/finish.go
+++ b/z/finish.go
@@ -16,24 +16,24 @@ var finishCmd = &cobra.Command{
 
     runningEntryId, err := database.GetRunningEntryId(user)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
     if runningEntryId == "" {
-      fmt.Printf("□ not running\n")
+      fmt.Printf("%s not running\n", CharFinish)
       os.Exit(1)
     }
 
     runningEntry, err := database.GetEntry(user, runningEntryId)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
     tmpEntry, err := NewEntry(runningEntry.ID, begin, finish, project, task, user)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
@@ -57,7 +57,7 @@ var finishCmd = &cobra.Command{
 
     _, err = database.FinishEntry(user, runningEntry)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
@@ -76,7 +76,7 @@ func init() {
   var err error
   database, err = InitDatabase()
   if err != nil {
-    fmt.Printf("△ %+v\n", err)
+    fmt.Printf("%s %+v\n", CharError, err)
     os.Exit(1)
   }
 }
diff --git a/z/root.go b/z/root.go
index edc71ba..b676a25 100644
--- a/z/root.go
+++ b/z/root.go
@@ -15,6 +15,13 @@ var task string
 
 var force bool
 
+const(
+  CharTrack = "▶"
+  CharFinish = "■"
+  CharErase = "◀"
+  CharError = "▲"
+)
+
 var rootCmd = &cobra.Command{
   Use:   "zeit",
   Short: "Command line Zeiterfassung",
@@ -23,7 +30,7 @@ var rootCmd = &cobra.Command{
 
 func Execute() {
   if err := rootCmd.Execute(); err != nil {
-    fmt.Printf("△ %+v\n", err)
+    fmt.Printf("%s %+v\n", CharError, err)
     os.Exit(-1)
   }
 }
diff --git a/z/track.go b/z/track.go
index cf6ee87..3f30426 100644
--- a/z/track.go
+++ b/z/track.go
@@ -15,18 +15,18 @@ var trackCmd = &cobra.Command{
 
     runningEntryId, err := database.GetRunningEntryId(user)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
     if runningEntryId != "" {
-      fmt.Printf("▷ a task is already running\n")
+      fmt.Printf("%s a task is already running\n", CharTrack)
       os.Exit(1)
     }
 
     newEntry, err := NewEntry("", begin, finish, project, task, user)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
@@ -34,7 +34,7 @@ var trackCmd = &cobra.Command{
 
     _, err = database.AddEntry(user, newEntry, isRunning)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
@@ -54,7 +54,7 @@ func init() {
   var err error
   database, err = InitDatabase()
   if err != nil {
-    fmt.Printf("△ %+v\n", err)
+    fmt.Printf("%s %+v\n", CharError, err)
     os.Exit(1)
   }
 }
diff --git a/z/tracking.go b/z/tracking.go
index 2e41a9d..bee6cc2 100644
--- a/z/tracking.go
+++ b/z/tracking.go
@@ -15,18 +15,18 @@ var trackingCmd = &cobra.Command{
 
     runningEntryId, err := database.GetRunningEntryId(user)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
     if runningEntryId == "" {
-      fmt.Printf("□ not running\n")
+      fmt.Printf("%s not running\n", CharFinish)
       os.Exit(1)
     }
 
     runningEntry, err := database.GetEntry(user, runningEntryId)
     if err != nil {
-      fmt.Printf("△ %+v\n", err)
+      fmt.Printf("%s %+v\n", CharError, err)
       os.Exit(1)
     }
 
@@ -41,7 +41,7 @@ func init() {
   var err error
   database, err = InitDatabase()
   if err != nil {
-    fmt.Printf("△ %+v\n", err)
+    fmt.Printf("%s %+v\n", CharError, err)
     os.Exit(1)
   }
 }