diff --git a/ortools/port/BUILD.bazel b/ortools/port/BUILD.bazel
index dec5b995f7..e5eedc3da9 100644
--- a/ortools/port/BUILD.bazel
+++ b/ortools/port/BUILD.bazel
@@ -30,6 +30,7 @@ cc_library(
     deps = [
         "//ortools/base",
         "//ortools/util:parse_proto",
+        "@abseil-cpp//absl/log",
         "@abseil-cpp//absl/strings",
         "@com_google_protobuf//:protobuf",
     ],
diff --git a/ortools/port/proto_utils.h b/ortools/port/proto_utils.h
index 448bce25df..5fd7d2628f 100644
--- a/ortools/port/proto_utils.h
+++ b/ortools/port/proto_utils.h
@@ -16,6 +16,7 @@
 
 #include <string>
 
+#include "absl/log/log.h"
 #include "absl/strings/ascii.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"