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-rw-r--r--include/minikin/FontCollection.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/minikin/FontCollection.h b/include/minikin/FontCollection.h
index ee0315e..63f79d6 100644
--- a/include/minikin/FontCollection.h
+++ b/include/minikin/FontCollection.h
@@ -19,6 +19,7 @@
#include <gtest/gtest_prod.h>
+#include <functional>
#include <memory>
#include <unordered_map>
#include <vector>