diff --git a/src/libexpr/attr-path.cc b/src/libexpr/attr-path.cc
index 8ec24269f..42a088050 100644
--- a/src/libexpr/attr-path.cc
+++ b/src/libexpr/attr-path.cc
@@ -58,7 +58,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
         Value * vNew = state.allocValue();
         state.autoCallFunction(autoArgs, *v, *vNew);
         v = vNew;
-        state.forceValue(*v, v->determinePos(vIn.determinePos(noPos)));
+        state.forceValue(*v, noPos);
 
         /* It should evaluate to either a set or an expression,
            according to what is specified in the attrPath. */
diff --git a/src/libexpr/eval-cache.cc b/src/libexpr/eval-cache.cc
index 222a34116..d6b9ea29b 100644
--- a/src/libexpr/eval-cache.cc
+++ b/src/libexpr/eval-cache.cc
@@ -336,7 +336,7 @@ Value & AttrCursor::getValue()
     if (!_value) {
         if (parent) {
             auto & vParent = parent->first->getValue();
-            root->state.forceAttrs(vParent, vParent.determinePos(noPos));
+            root->state.forceAttrs(vParent, noPos);
             auto attr = vParent.attrs->get(parent->second);
             if (!attr)
                 throw Error("attribute '%s' is unexpectedly missing", getAttrPathStr());
@@ -381,7 +381,7 @@ Value & AttrCursor::forceValue()
     auto & v = getValue();
 
     try {
-        root->state.forceValue(v, v.determinePos(noPos));
+        root->state.forceValue(v, noPos);
     } catch (EvalError &) {
         debug("setting '%s' to failed", getAttrPathStr());
         if (root->db)
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index e1c089b95..df411f3d5 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -1280,7 +1280,7 @@ void ExprOpHasAttr::eval(EvalState & state, Env & env, Value & v)
     e->eval(state, env, vTmp);
 
     for (auto & i : attrPath) {
-        state.forceValue(*vAttrs, vAttrs->determinePos(noPos));
+        state.forceValue(*vAttrs, noPos);
         Bindings::iterator j;
         Symbol name = getName(i, state, env);
         if (vAttrs->type() != nAttrs ||
@@ -2037,8 +2037,8 @@ Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
 
 bool EvalState::eqValues(Value & v1, Value & v2)
 {
-    forceValue(v1, v1.determinePos(noPos));
-    forceValue(v2, v2.determinePos(noPos));
+    forceValue(v1, noPos);
+    forceValue(v2, noPos);
 
     /* !!! Hack to support some old broken code that relies on pointer
        equality tests between sets.  (Specifically, builderDefs calls