diff --git a/api_test.go b/api_test.go
index c2e7db4bd0..4306f74100 100644
--- a/api_test.go
+++ b/api_test.go
@@ -19,25 +19,25 @@ import (
 
 func TestGetBoolParam(t *testing.T) {
 	if ret, err := getBoolParam("true"); err != nil || !ret {
-		t.Fatalf("true -> true, nil | got %b %s", ret, err)
+		t.Fatalf("true -> true, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam("True"); err != nil || !ret {
-		t.Fatalf("True -> true, nil | got %b %s", ret, err)
+		t.Fatalf("True -> true, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam("1"); err != nil || !ret {
-		t.Fatalf("1 -> true, nil | got %b %s", ret, err)
+		t.Fatalf("1 -> true, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam(""); err != nil || ret {
-		t.Fatalf("\"\" -> false, nil | got %b %s", ret, err)
+		t.Fatalf("\"\" -> false, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam("false"); err != nil || ret {
-		t.Fatalf("false -> false, nil | got %b %s", ret, err)
+		t.Fatalf("false -> false, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam("0"); err != nil || ret {
-		t.Fatalf("0 -> false, nil | got %b %s", ret, err)
+		t.Fatalf("0 -> false, nil | got %t %s", ret, err)
 	}
 	if ret, err := getBoolParam("faux"); err == nil || ret {
-		t.Fatalf("faux -> false, err | got %b %s", ret, err)
+		t.Fatalf("faux -> false, err | got %t %s", ret, err)
 	}
 }
 
diff --git a/commands.go b/commands.go
index 3ce8c8eb98..6ada02d552 100644
--- a/commands.go
+++ b/commands.go
@@ -345,7 +345,7 @@ func (cli *DockerCli) CmdLogin(args ...string) error {
 	}
 	auth.SaveConfig(cli.authConfig)
 	if out2.Status != "" {
-		fmt.Fprintln(cli.out, "%s\n", out2.Status)
+		fmt.Fprintf(cli.out, "%s\n", out2.Status)
 	}
 	return nil
 }
@@ -370,7 +370,7 @@ func (cli *DockerCli) CmdWait(args ...string) error {
 			if err != nil {
 				return err
 			}
-			fmt.Fprintf(cli.out, "%s\n", out.StatusCode)
+			fmt.Fprintf(cli.out, "%d\n", out.StatusCode)
 		}
 	}
 	return nil
@@ -405,7 +405,7 @@ func (cli *DockerCli) CmdVersion(args ...string) error {
 		fmt.Fprintf(cli.out, "Git commit: %s\n", out.GitCommit)
 	}
 	if out.GoVersion != "" {
-		fmt.Fprintln(cli.out, "Go version: %s\n", out.GoVersion)
+		fmt.Fprintf(cli.out, "Go version: %s\n", out.GoVersion)
 	}
 	return nil
 }
@@ -513,7 +513,7 @@ func (cli *DockerCli) CmdStart(args ...string) error {
 		if err != nil {
 			fmt.Fprintf(cli.err, "%s\n", err)
 		} else {
-			fmt.Fprintln(cli.out, "%s\n", name)
+			fmt.Fprintf(cli.out, "%s\n", name)
 		}
 	}
 	return nil
diff --git a/graph.go b/graph.go
index f2b2ccec8e..0bf7eccdbe 100644
--- a/graph.go
+++ b/graph.go
@@ -189,7 +189,7 @@ func (graph *Graph) Mktemp(id string) (string, error) {
 		return "", fmt.Errorf("Couldn't create temp: %s", err)
 	}
 	if tmp.Exists(id) {
-		return "", fmt.Errorf("Image %d already exists", id)
+		return "", fmt.Errorf("Image %s already exists", id)
 	}
 	return tmp.imageRoot(id), nil
 }
diff --git a/utils/utils.go b/utils/utils.go
index 6e12f1f1bb..e5b2a0f4fd 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -87,7 +87,7 @@ func (r *progressReader) Read(p []byte) (n int, err error) {
 	}
 	if r.readProgress-r.lastUpdate > updateEvery || err != nil {
 		if r.readTotal > 0 {
-			fmt.Fprintf(r.output, r.template, HumanSize(int64(r.readProgress)), HumanSize(int64(r.readTotal)), fmt.Sprintf("%2.0f%%",float64(r.readProgress)/float64(r.readTotal)*100))
+			fmt.Fprintf(r.output, r.template, HumanSize(int64(r.readProgress)), HumanSize(int64(r.readTotal)), fmt.Sprintf("%2.0f%%", float64(r.readProgress)/float64(r.readTotal)*100))
 		} else {
 			fmt.Fprintf(r.output, r.template, r.readProgress, "?", "n/a")
 		}
@@ -133,7 +133,7 @@ func HumanDuration(d time.Duration) string {
 	} else if hours < 24*365*2 {
 		return fmt.Sprintf("%d months", hours/24/30)
 	}
-	return fmt.Sprintf("%d years", d.Hours()/24/365)
+	return fmt.Sprintf("%f years", d.Hours()/24/365)
 }
 
 // HumanSize returns a human-readable approximation of a size