diff --git a/src/ca/processThread.cpp b/src/ca/processThread.cpp
index 2721c5d6f..bc3f298ec 100644
--- a/src/ca/processThread.cpp
+++ b/src/ca/processThread.cpp
@@ -18,7 +18,7 @@
 #include <iocinf.h>
 
 processThread::processThread (cac *pcacIn) :
-    osiThread ("CAC process", 0x1000, threadPriorityMedium), 
+    osiThread ("CAC process", threadGetStackSize(threadStackSmall), threadPriorityMedium), 
     pcac (pcacIn),
     shutDown (false)
 {