diff --git a/src/time/Parser.cxx b/src/time/Parser.cxx
index b09bba14f..369408efb 100644
--- a/src/time/Parser.cxx
+++ b/src/time/Parser.cxx
@@ -65,7 +65,7 @@ ParseTimePoint(const char *s, const char *format)
 	(void)format;
 	throw std::runtime_error("Time parsing not implemented on Windows");
 #else
-	struct tm tm;
+	struct tm tm{};
 	const char *end = strptime(s, format, &tm);
 	if (end == nullptr || *end != 0)
 		throw std::runtime_error("Failed to parse time stamp");