diff --git a/browsertests/testdata/testfixture.js b/browsertests/testdata/testfixture.js
index 960866cf..ad31d05f 100644
--- a/browsertests/testdata/testfixture.js
+++ b/browsertests/testdata/testfixture.js
@@ -1,6 +1,6 @@
 // TestFixture records log messages and errors in an array that will
 // be returned to Go code. Each element in the result array is either
-// an array of the form ["LOG", ...]", or ["ERROR", ...].
+// an array of the form ["LOG", ...], or ["ERROR", ...].
 class TestFixture {
   constructor() {
     this.context = "";  // Added to front of all log and error messages.
diff --git a/internal/report/report.go b/internal/report/report.go
index 7035e231..5ab0da65 100644
--- a/internal/report/report.go
+++ b/internal/report/report.go
@@ -1169,6 +1169,9 @@ func ProfileLabels(rpt *Report) []string {
 	if o.SampleType != "" {
 		label = append(label, "Type: "+o.SampleType)
 	}
+	if url := prof.DocURL; url != "" {
+		label = append(label, "Doc: "+url)
+	}
 	if prof.TimeNanos != 0 {
 		const layout = "Jan 2, 2006 at 3:04pm (MST)"
 		label = append(label, "Time: "+time.Unix(0, prof.TimeNanos).Format(layout))
diff --git a/internal/report/report_test.go b/internal/report/report_test.go
index 08ce9da1..845c3690 100644
--- a/internal/report/report_test.go
+++ b/internal/report/report_test.go
@@ -16,6 +16,7 @@ package report
 
 import (
 	"bytes"
+	"fmt"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -576,3 +577,21 @@ func TestDocURL(t *testing.T) {
 		})
 	}
 }
+
+func TestDocURLInLabels(t *testing.T) {
+	const url = "http://example.com/pprof-help"
+	profile := testProfile.Copy()
+	profile.DocURL = url
+	rpt := New(profile, &Options{
+		OutputFormat: Text,
+		Symbol:       regexp.MustCompile(`.`),
+		TrimPath:     "/some/path",
+		SampleValue:  func(v []int64) int64 { return v[1] },
+		SampleUnit:   testProfile.SampleType[1].Unit,
+	})
+
+	labels := fmt.Sprintf("%v", ProfileLabels(rpt))
+	if !strings.Contains(labels, url) {
+		t.Errorf("expected URL %q not found in %s", url, labels)
+	}
+}
diff --git a/profile/profile.go b/profile/profile.go
index 0983656c..f47a2439 100644
--- a/profile/profile.go
+++ b/profile/profile.go
@@ -849,7 +849,7 @@ func (p *Profile) HasFileLines() bool {
 
 // Unsymbolizable returns true if a mapping points to a binary for which
 // locations can't be symbolized in principle, at least now. Examples are
-// "[vdso]", [vsyscall]" and some others, see the code.
+// "[vdso]", "[vsyscall]" and some others, see the code.
 func (m *Mapping) Unsymbolizable() bool {
 	name := filepath.Base(m.File)
 	return strings.HasPrefix(name, "[") || strings.HasPrefix(name, "linux-vdso") || strings.HasPrefix(m.File, "/dev/dri/") || m.File == "//anon"