diff --git a/src/systemc/core/sc_spawn.cc b/src/systemc/core/sc_spawn.cc
index 31b4f3c647..f582289c9a 100644
--- a/src/systemc/core/sc_spawn.cc
+++ b/src/systemc/core/sc_spawn.cc
@@ -53,7 +53,7 @@ spawnWork(ProcessFuncWrapper *func, const char *name,
         if (opts->_dontInitialize)
             dontInitialize = true;
         if (opts->_stackSize != -1)
-            warn("Ignoring request to set stack size.\n");
+            warn_once("Ignoring request to set stack size.\n");
     }
 
     if (!name || name[0] == '\0') {