diff --git a/t/Makefile b/t/Makefile
index 00f64820c2297438b6cf43dd53df93766fbfd402..b81fb91b52af7cd127d243f6d96170cc757d7e5e 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -69,6 +69,12 @@ SMOKE_UPLOAD_FLAGS =
 ifdef SMOKE_USERNAME
 	SMOKE_UPLOAD_FLAGS += -F username="$(SMOKE_USERNAME)" -F password="$(SMOKE_PASSWORD)"
 endif
+ifdef SMOKE_COMMENT
+	SMOKE_UPLOAD_FLAGS += -F comments="$(SMOKE_COMMENT)"
+endif
+ifdef SMOKE_TAGS
+	SMOKE_UPLOAD_FLAGS += -F tags="$(SMOKE_TAGS)"
+endif
 
 smoke_report: smoke
 	curl \
diff --git a/t/README b/t/README
index 5ed06f62d5aa02faa5ea6a6e239c57f505812cfe..336871fe42ac5c69ec7ca349346b85b15a93e4e0 100644
--- a/t/README
+++ b/t/README
@@ -600,6 +600,13 @@ and password you'll be able to do:
 
     SMOKE_USERNAME=<username> SMOKE_PASSWORD=<password> make smoke_report
 
+You can also add an additional comment to attach to the report, and/or
+a comma separated list of tags:
+
+    SMOKE_USERNAME=<username> SMOKE_PASSWORD=<password> \
+        SMOKE_COMMENT=<comment> SMOKE_TAGS=<tags> \
+        make smoke_report
+
 Once the report is uploaded it'll be made available at
 http://smoke.git.nix.is, here's an overview of Recent Smoke Reports
 for Git: