diff --git a/perf/go/ingest/parser/parser.go b/perf/go/ingest/parser/parser.go
index 44a6795..58f4584 100644
--- a/perf/go/ingest/parser/parser.go
+++ b/perf/go/ingest/parser/parser.go
@@ -122,6 +122,9 @@
 // then the file should be processed, in which case the returned branch name is
 // "".
 func (p *Parser) checkBranchName(params map[string]string) (string, bool) {
+	if len(p.branchNames) == 0 {
+		return "", true
+	}
 	branch, ok := params["branch"]
 	if ok {
 		return branch, p.branchNames[branch]
diff --git a/perf/go/ingest/parser/parser_test.go b/perf/go/ingest/parser/parser_test.go
index a45bb70..43fe63d 100644
--- a/perf/go/ingest/parser/parser_test.go
+++ b/perf/go/ingest/parser/parser_test.go
@@ -108,6 +108,7 @@
 	filename        string
 }{
 	"parse_Success":                               {parse_Success, "success.json"},
+	"parse_NoBranchSpecified_Success":             {parse_NoBranchSpecified_Success, "success.json"},
 	"parse_MalformedJSONError":                    {parse_MalformedJSONError, "invalid.json"},
 	"parse_SkipIfNotListedInBranches":             {parse_SkipIfNotListedInBranches, "unknown_branch.json"},
 	"parse_SkipIfListedInBranchesButHasNoData":    {parse_SkipIfListedInBranchesButHasNoData, "no_results.json"},
@@ -127,6 +128,19 @@
 	assert.Equal(t, int64(0), p.parseFailCounter.Get())
 }
 
+func parse_NoBranchSpecified_Success(t *testing.T, p *Parser, f file.File) {
+	p.branchNames = nil
+	params, values, gitHash, err := p.Parse(f)
+	require.NoError(t, err)
+	assert.Equal(t, "fe4a4029a080bc955e9588d05a6cd9eb490845d4", gitHash)
+	assert.Len(t, values, 4)
+	assert.Len(t, params, 4)
+	assert.Contains(t, values, float32(858))
+	assert.Contains(t, params, expectedGoodParams)
+	assert.Equal(t, int64(1), p.parseCounter.Get())
+	assert.Equal(t, int64(0), p.parseFailCounter.Get())
+}
+
 func parse_MalformedJSONError(t *testing.T, p *Parser, f file.File) {
 	_, _, _, err := p.Parse(f)
 	require.Error(t, err)