diff --git a/src/libexpr/get-drvs.hh b/src/libexpr/get-drvs.hh
index 525ac9803..fd927b9e5 100644
--- a/src/libexpr/get-drvs.hh
+++ b/src/libexpr/get-drvs.hh
@@ -45,7 +45,6 @@ public:
      */
     std::string attrPath;
 
-    DrvInfo(EvalState & state) : state(&state) { };
     DrvInfo(EvalState & state, std::string attrPath, Bindings * attrs);
     DrvInfo(EvalState & state, ref<Store> store, const std::string & drvPathWithOutputs);