diff --git a/src/libexpr/get-drvs.hh b/src/libexpr/get-drvs.hh
index aaafff190..98f762494 100644
--- a/src/libexpr/get-drvs.hh
+++ b/src/libexpr/get-drvs.hh
@@ -5,8 +5,6 @@
 #include <string>
 #include <map>
 
-#include <boost/shared_ptr.hpp>
-
 
 namespace nix {