diff --git a/src/time/ISO8601.cxx b/src/time/ISO8601.cxx
index f4d0d5d38..b92a0e743 100644
--- a/src/time/ISO8601.cxx
+++ b/src/time/ISO8601.cxx
@@ -138,6 +138,8 @@ ParseISO8601(const char *s)
 			precision = std::chrono::seconds(1);
 		else if ((end = strptime(s, "%H:%M", &tm)) != nullptr)
 			precision = std::chrono::minutes(1);
+		else if ((end = strptime(s, "%H", &tm)) != nullptr)
+			precision = std::chrono::hours(1);
 		else
 			throw std::runtime_error("Failed to parse time of day");
 
diff --git a/test/TestISO8601.cxx b/test/TestISO8601.cxx
index 6b2506cce..3305b47de 100644
--- a/test/TestISO8601.cxx
+++ b/test/TestISO8601.cxx
@@ -62,6 +62,10 @@ static constexpr struct {
 	{ "2019-02-04T16:46", 1549298760, std::chrono::minutes(1) },
 	{ "2019-02-04T16:46Z", 1549298760, std::chrono::minutes(1) },
 
+	/* without minutes */
+	{ "2019-02-04T16", 1549296000, std::chrono::hours(1) },
+	{ "2019-02-04T16Z", 1549296000, std::chrono::hours(1) },
+
 	/* with time zone */
 	{ "2019-02-04T16:46:41+02", 1549291601, std::chrono::seconds(1) },
 	{ "2019-02-04T16:46:41+0200", 1549291601, std::chrono::seconds(1) },