diff --git a/test/validate/Makefile b/test/validate/Makefile
index e83c35c6f8f0e04c7c3a364ce6947e0f27f8af05..7e9c7b46ff9bc78f1d0f69c2660eb289dfeb2a2f 100644
--- a/test/validate/Makefile
+++ b/test/validate/Makefile
@@ -76,6 +76,7 @@ DBD += seqSoftIoc.dbd
 seqSoftIoc_DBD += base.dbd
 seqSoftIoc_DBD += testSupport.dbd
 
+seqSoftIoc_SRCS += subThreadSleep.c
 seqSoftIoc_SRCS += seqSoftIoc_registerRecordDeviceDriver.cpp
 
 ifeq '$(EPICS_HAS_UNIT_TEST)' '1'
diff --git a/test/validate/subThreadSleep.c b/test/validate/subThreadSleep.c
new file mode 100644
index 0000000000000000000000000000000000000000..79cbca64ef6cd089082995bf34a6e241b86a7dfa
--- /dev/null
+++ b/test/validate/subThreadSleep.c
@@ -0,0 +1,18 @@
+/*************************************************************************\
+Copyright (c) 2010-2012 Helmholtz-Zentrum Berlin f. Materialien
+                        und Energie GmbH, Germany (HZB)
+This file is distributed subject to a Software License Agreement found
+in the file LICENSE that is included with this distribution.
+\*************************************************************************/
+#include "epicsThread.h"
+#include "subRecord.h"
+#include "registryFunction.h"
+#include "epicsExport.h"
+
+long subThreadSleep(struct subRecord *psub)
+{
+    epicsThreadSleep(1);
+    psub->val += 1.0;
+    return 0;
+}
+epicsRegisterFunction(subThreadSleep);
diff --git a/test/validate/testSupport.c b/test/validate/testSupport.c
index 53f0e4e600ea42fbd9eba7e3202d5979827ea0e7..7598c1ae38a7a80cffda7c4b58a61acb93031c72 100644
--- a/test/validate/testSupport.c
+++ b/test/validate/testSupport.c
@@ -60,15 +60,3 @@ void seq_test_done(void)
     epicsAtThreadExit(seq_test_at_thread_exit, 0);
 #endif
 }
-
-#include "subRecord.h"
-#include "registryFunction.h"
-#include "epicsExport.h"
-
-long subThreadSleep(struct subRecord *psub)
-{
-    epicsThreadSleep(1);
-    psub->val += 1.0;
-    return 0;
-}
-epicsRegisterFunction(subThreadSleep);