diff --git a/src/hh_nlambda_loop_cpp.cpp b/src/hh_nlambda_loop_cpp.cpp
index 9c619b9..af42bb4 100644
--- a/src/hh_nlambda_loop_cpp.cpp
+++ b/src/hh_nlambda_loop_cpp.cpp
@@ -61,8 +61,8 @@ Rcpp::List hh_nlambda_loop_cpp(
       // theta0 <- my_values$theta0 ### iteration
       // beta_hat <- my_values$beta_hat
       // y_hat <- my_values$y_hat
-    }
-    if (parallel && pal == 0) {
+    } else if (parallel && pal == 0) {
+      // This is the default case.
       // beta <- my_values[hh, ]$beta
       // theta <- my_values[hh, ]$theta
       // my_obj[[hh]] <- list(my_values[hh, ]$obj)
@@ -70,14 +70,8 @@ Rcpp::List hh_nlambda_loop_cpp(
       // theta0 <- my_values[hh, ]$theta0 ### iteration
       // beta_hat <- my_values[hh, ]$beta_hat
       // y_hat <- my_values[hh, ]$y_hat
-    } else if (parallel && pal == 0) {
-      // beta <- my_values[[hh]]$beta
-      // theta <- my_values[[hh]]$theta
-      // my_obj[[hh]] <- list(my_values[[hh]]$obj)
-      // beta0 <- my_values[[hh]]$beta0
-      // theta0 <- my_values[[hh]]$theta0 ### iteration
-      // beta_hat <- my_values[[hh]]$beta_hat
-      // y_hat <- my_values[[hh]]$y_hat
+    } else {
+      Rcpp::stop("Invalid combination of parallel and pal.");
     }
 
     // beta1 <- as(beta * (abs(beta) > tol), "sparseMatrix")