diff --git a/core/src/main/java/org/lflang/federated/extensions/CExtension.java b/core/src/main/java/org/lflang/federated/extensions/CExtension.java
index 69c59ccfed..dd089a9f13 100644
--- a/core/src/main/java/org/lflang/federated/extensions/CExtension.java
+++ b/core/src/main/java/org/lflang/federated/extensions/CExtension.java
@@ -687,8 +687,7 @@ private String generateCodeToInitializeFederate(
             "\n",
             "// Initialize the socket mutexes",
             "lf_mutex_init(&lf_outbound_netchan_mutex);",
-            "lf_mutex_init(&lf_inbound_netchan_mutex);",
-            "lf_mutex_init(&shutdown_mutex);",
+            "init_shutdown_mutex();",
             "lf_cond_init(&lf_port_status_changed, &env->mutex);"));
 
     // Find the STA (A.K.A. the global STP offset) for this federate.
diff --git a/core/src/main/resources/lib/c/reactor-c b/core/src/main/resources/lib/c/reactor-c
index 94cfbfdb2c..b3dd3672de 160000
--- a/core/src/main/resources/lib/c/reactor-c
+++ b/core/src/main/resources/lib/c/reactor-c
@@ -1 +1 @@
-Subproject commit 94cfbfdb2ca3d3b7283e59d0cba99db5b148e5ad
+Subproject commit b3dd3672decf495e201c1db64566c2967e5f9a85