diff --git a/src/libstore/path-info.cc b/src/libstore/path-info.cc
index e60d7abe0..7eeda35d1 100644
--- a/src/libstore/path-info.cc
+++ b/src/libstore/path-info.cc
@@ -1,5 +1,6 @@
 #include "path-info.hh"
 #include "worker-protocol.hh"
+#include "store-api.hh"
 
 namespace nix {
 
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 34b2fc17b..fa7202ae6 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -1,7 +1,6 @@
 #pragma once
 ///@file
 
-#include "store-api.hh"
 #include "serialise.hh"
 
 namespace nix {
@@ -79,6 +78,15 @@ typedef enum {
 class Store;
 struct Source;
 
+// items being serialized
+struct DerivedPath;
+struct DrvOutput;
+struct Realisation;
+struct BuildResult;
+struct KeyedBuildResult;
+enum TrustedFlag : bool;
+
+
 /**
  * Used to guide overloading
  *