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-rw-r--r--src/libexpr/primops.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index bd8f95e47..4b1aef935 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1,3 +1,5 @@
+#include <algorithm>
+
#include "build.hh"
#include "eval.hh"
#include "globals.hh"