diff --git a/src/nix/command.hh b/src/nix/command.hh
index c362f9daa..5e4b0f399 100644
--- a/src/nix/command.hh
+++ b/src/nix/command.hh
@@ -75,6 +75,8 @@ struct Installable
 
 struct SourceExprCommand : virtual Args, StoreCommand, MixEvalArgs
 {
+    friend void mainWrapped(int argc, char * * argv);
+
     Path file;
 
     SourceExprCommand();
diff --git a/src/nix/main.cc b/src/nix/main.cc
index de429eba7..803f1ef80 100644
--- a/src/nix/main.cc
+++ b/src/nix/main.cc
@@ -102,6 +102,11 @@ void mainWrapped(int argc, char * * argv)
 
     args.command->prepare();
     args.command->run();
+
+    auto c = dynamic_cast<SourceExprCommand *>(&*args.command);
+    if (c && c->evalState) {
+        c->evalState->printStats();
+    }
 }
 
 }