diff --git a/internal/core/adt/expr.go b/internal/core/adt/expr.go
index 0a5002859..a6c1cd4a2 100644
--- a/internal/core/adt/expr.go
+++ b/internal/core/adt/expr.go
@@ -1711,10 +1711,6 @@ func (x *BuiltinValidator) Source() ast.Node {
 	return x.Src.Source()
 }
 
-func (x *BuiltinValidator) Pos() token.Pos {
-	return Pos(x)
-}
-
 func (x *BuiltinValidator) Kind() Kind {
 	return x.Builtin.Params[0].Kind()
 }
diff --git a/internal/pkg/builtin.go b/internal/pkg/builtin.go
index 1f285f1c1..baa3243dd 100644
--- a/internal/pkg/builtin.go
+++ b/internal/pkg/builtin.go
@@ -241,12 +241,12 @@ func processErr(call *CallCtxt, errVal interface{}, ret adt.Expr) adt.Expr {
 	case string, fmt.Stringer:
 		// A string or a stringer likely used as a panic value.
 		ret = wrapCallErr(call, &adt.Bottom{
-			Err: errors.Newf(call.Pos(), "%s", err),
+			Err: errors.Newf(call.ctx.Pos(), "%s", err),
 		})
 	default:
 		// Some other value used when panicking; likely a bug.
 		ret = wrapCallErr(call, &adt.Bottom{
-			Err: errors.Newf(call.Pos(), "BUG: non-stringifiable %T", err),
+			Err: errors.Newf(call.ctx.Pos(), "BUG: non-stringifiable %T", err),
 		})
 	}
 	return ret
diff --git a/internal/pkg/context.go b/internal/pkg/context.go
index ca7f61eac..07be918b2 100644
--- a/internal/pkg/context.go
+++ b/internal/pkg/context.go
@@ -22,7 +22,6 @@ import (
 	"github.com/cockroachdb/apd/v3"
 
 	"cuelang.org/go/cue"
-	"cuelang.org/go/cue/token"
 	"cuelang.org/go/internal/core/adt"
 	"cuelang.org/go/internal/value"
 )
@@ -38,10 +37,6 @@ type CallCtxt struct {
 	args []adt.Value
 }
 
-func (c *CallCtxt) Pos() token.Pos {
-	return c.ctx.Pos()
-}
-
 func (c *CallCtxt) Name() string {
 	return c.builtin.name(c.ctx)
 }
diff --git a/internal/pkg/errors.go b/internal/pkg/errors.go
index d374fb9f5..4c06c2ae5 100644
--- a/internal/pkg/errors.go
+++ b/internal/pkg/errors.go
@@ -48,7 +48,7 @@ func (c *CallCtxt) errf(underlying error, format string, args ...interface{}) {
 	case error:
 		errs = errors.Promote(x, "")
 	}
-	vErr := c.ctx.NewPosf(c.Pos(), format, args...)
+	vErr := c.ctx.NewPosf(c.ctx.Pos(), format, args...)
 	c.Err = &callError{&adt.Bottom{Code: code, Err: errors.Wrap(vErr, errs)}}
 }