diff --git a/src/DynareMain.cc b/src/DynareMain.cc
index e4bd0efdea658cc820417399b70c89f6c782f568..d9ba0ccbede673bb4d70bfb8b75433fc485b97ce 100644
--- a/src/DynareMain.cc
+++ b/src/DynareMain.cc
@@ -503,7 +503,7 @@ main(int argc, char **argv)
     }
 
   if (mod_file->use_dll)
-    ModelTree::initializeMEXCompilationWorkers(max(jthread::hardware_concurrency(), 1U));
+    ModelTree::initializeMEXCompilationWorkers(max(thread::hardware_concurrency(), 1U));
 
   if (json == JsonOutputPointType::parsing)
     mod_file->writeJsonOutput(basename, json, json_output_mode, onlyjson);
diff --git a/src/ModelTree.cc b/src/ModelTree.cc
index 9e780a58beb5c82adaeceaa2e1be0437f3e745fc..9f691dcf3bfa50f0c87d9adc57af09a52946ecdc 100644
--- a/src/ModelTree.cc
+++ b/src/ModelTree.cc
@@ -45,7 +45,7 @@ condition_variable_any ModelTree::mex_compilation_cv;
 mutex ModelTree::mex_compilation_mut;
 vector<tuple<filesystem::path, set<filesystem::path>, string>> ModelTree::mex_compilation_queue;
 set<filesystem::path> ModelTree::mex_compilation_ongoing, ModelTree::mex_compilation_done, ModelTree::mex_compilation_failed;
-vector<jthread> ModelTree::mex_compilation_workers;
+vector<thread> ModelTree::mex_compilation_workers;
 
 void
 ModelTree::copyHelper(const ModelTree &m)
@@ -1868,6 +1868,7 @@ ModelTree::getRHSFromLHS(expr_t lhs) const
 void
 ModelTree::initializeMEXCompilationWorkers(int numworkers)
 {
+  /*
   assert(numworkers > 0);
   assert(mex_compilation_workers.empty());
 
@@ -1917,6 +1918,7 @@ ModelTree::initializeMEXCompilationWorkers(int numworkers)
             mex_compilation_cv.notify_all();
           }
     });
+*/
 }
 
 void
diff --git a/src/ModelTree.hh b/src/ModelTree.hh
index f7f3394b3c4b2f83d9ec61cfb5d45278ae69a9a2..bae1a9bdede569cabadefad16171c6fc8ee38556 100644
--- a/src/ModelTree.hh
+++ b/src/ModelTree.hh
@@ -406,7 +406,7 @@ private:
   vector<int> endo2eq;
 
   // Stores workers used for compiling MEX files in parallel
-  static vector<jthread> mex_compilation_workers;
+  static vector<thread> mex_compilation_workers;
 
   /* The following variables implement the thread synchronization mechanism for
      limiting the number of concurrent GCC processes and tracking dependencies