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-rw-r--r--metrics/src/vespa/metrics/metric.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/metrics/src/vespa/metrics/metric.cpp b/metrics/src/vespa/metrics/metric.cpp
index 579e3bdfbe3..20083300271 100644
--- a/metrics/src/vespa/metrics/metric.cpp
+++ b/metrics/src/vespa/metrics/metric.cpp
@@ -12,6 +12,7 @@
#include <iterator>
#include <cassert>
#include <algorithm>
+#include <ostream>
namespace metrics {