diff --git a/solver/jobs.go b/solver/jobs.go
index 38c42b533185..3c50ccf4dfbc 100644
--- a/solver/jobs.go
+++ b/solver/jobs.go
@@ -872,6 +872,9 @@ func (s *sharedOp) Exec(ctx context.Context, inputs []Result) (outputs []Result,
 		return nil, nil, err
 	}
 	r := res.(*execRes)
+	if r == nil {
+		return nil, nil, nil
+	}
 	return unwrapShared(r.execRes), r.execExporters, nil
 }