diff --git a/pkg/cmd/issue/shared/lookup_test.go b/pkg/cmd/issue/shared/lookup_test.go
index 694a3fd05..44f496de4 100644
--- a/pkg/cmd/issue/shared/lookup_test.go
+++ b/pkg/cmd/issue/shared/lookup_test.go
@@ -79,6 +79,23 @@ func TestIssueFromArgWithFields(t *testing.T) {
 			wantIssue: 13,
 			wantRepo:  "https://example.org/OWNER/REPO",
 		},
+		{
+			name: "PR URL argument",
+			args: args{
+				selector:   "https://example.org/OWNER/REPO/pull/13#comment-123",
+				baseRepoFn: nil,
+			},
+			httpStub: func(r *httpmock.Registry) {
+				r.Register(
+					httpmock.GraphQL(`query IssueByNumber\b`),
+					httpmock.StringResponse(`{"data":{"repository":{
+						"hasIssuesEnabled": true,
+						"issue":{"number":13}
+					}}}`))
+			},
+			wantIssue: 13,
+			wantRepo:  "https://example.org/OWNER/REPO",
+		},
 		{
 			name: "project cards permission issue",
 			args: args{