diff --git a/src/libexpr/function-trace.cc b/src/libexpr/function-trace.cc
index af1486f78..c6057b384 100644
--- a/src/libexpr/function-trace.cc
+++ b/src/libexpr/function-trace.cc
@@ -1,4 +1,5 @@
 #include "function-trace.hh"
+#include "logging.hh"
 
 namespace nix {