diff --git a/ortools/base/logging.h b/ortools/base/logging.h
index 242cbf669c..79e745d2a8 100644
--- a/ortools/base/logging.h
+++ b/ortools/base/logging.h
@@ -20,6 +20,7 @@
 #include "absl/log/check.h"
 #include "absl/log/die_if_null.h"
 #include "absl/log/log.h"
+#include "absl/log/vlog_is_on.h"
 #include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"