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-rw-r--r--src/indirectmap.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/indirectmap.h b/src/indirectmap.h
index 76da4a6bd5..417d500bd4 100644
--- a/src/indirectmap.h
+++ b/src/indirectmap.h
@@ -5,6 +5,8 @@
#ifndef BITCOIN_INDIRECTMAP_H
#define BITCOIN_INDIRECTMAP_H
+#include <map>
+
template <class T>
struct DereferencingComparator { bool operator()(const T a, const T b) const { return *a < *b; } };