diff --git a/src/V3Sched.cpp b/src/V3Sched.cpp
index 39a6109e6..fb655e692 100644
--- a/src/V3Sched.cpp
+++ b/src/V3Sched.cpp
@@ -309,7 +309,8 @@ void orderSequentially(AstCFunc* funcp, const LogicByScope& lbs) {
                     }
                     subFuncp->addStmtsp(bodyp);
                     if (procp->needProcess()) subFuncp->setNeedProcess();
-                    util::splitCheck(subFuncp);
+                    // A coroutine holds a single process, so it is complete here
+                    if (procp->isSuspendable()) util::splitCheck(subFuncp);
                 }
             } else {
                 logicp->unlinkFrBack();
@@ -319,6 +320,14 @@ void orderSequentially(AstCFunc* funcp, const LogicByScope& lbs) {
         if (activep->backp()) activep->unlinkFrBack();
         VL_DO_DANGLING(activep->deleteTree(), activep);
     }
+    // Split sub-functions once complete
+    for (const auto& pair : lbs) {
+        AstScope* const scopep = pair.first;
+        if (AstCFunc* const subFuncp = VN_AS(scopep->user1p(), CFunc)) {
+            util::splitCheck(subFuncp);
+            scopep->user1p(nullptr);
+        }
+    }
 }
 
 //============================================================================