diff --git a/rstan/R/plugin.R b/rstan/R/plugin.R
index d254ce4..659c48a 100644
--- a/rstan/R/plugin.R
+++ b/rstan/R/plugin.R
@@ -96,8 +96,10 @@ rstanplugin <- function() {
   else {
     StanHeaders_pkg_libs <- system.file("lib", .Platform$r_arch,
                                         package = "StanHeaders", mustWork = TRUE)
-    RcppParallel_pkg_libs <- system.file("lib", .Platform$r_arch,
-                                         package = "RcppParallel", mustWork = TRUE)
+    RcppParallel_pkg_libs <- file.path(system.file(package = "RcppParallel", mustWork = TRUE), "lib")
+    if (!dir.exists(RcppParallel_pkg_libs)) {
+      RcppParallel_pkg_libs <- "/usr/lib"
+    }
     rstan_StanServices <- system.file("lib", .Platform$r_arch, "libStanServices.a",
                                       package = "rstan", mustWork = TRUE)
   }