diff --git a/src/libCom/test/epicsThreadPrivateTest.cpp b/src/libCom/test/epicsThreadPrivateTest.cpp
index 913e3f47d..7f1a8c3de 100644
--- a/src/libCom/test/epicsThreadPrivateTest.cpp
+++ b/src/libCom/test/epicsThreadPrivateTest.cpp
@@ -21,8 +21,8 @@ static epicsThreadPrivate < bool > priv;
 
 extern "C" void epicsThreadPrivateTestThread ( void * )
 {
-    testOk1 ( 0 == priv.get () );
-    static bool var;
+    testOk1 ( NULL == priv.get () );
+    bool var = true;
     priv.set ( &var );
     testOk1 ( &var == priv.get () );
 }
@@ -31,7 +31,7 @@ MAIN(epicsThreadPrivateTest)
 {
     testPlan(5);
 
-    static bool var;
+    bool var = false;
     priv.set ( &var );
     testOk1 ( &var == priv.get() );
 
@@ -41,8 +41,8 @@ MAIN(epicsThreadPrivateTest)
     epicsThreadSleep ( 1.0 );
     testOk1 ( &var == priv.get() );
 
-    priv.set ( 0 );
-    testOk1 ( 0 == priv.get() );
+    priv.set ( NULL );
+    testOk1 ( NULL == priv.get() );
 
     return testDone();
 }
diff --git a/src/libCom/test/epicsTimerTest.cpp b/src/libCom/test/epicsTimerTest.cpp
index c1d7c998a..45a98f0db 100644
--- a/src/libCom/test/epicsTimerTest.cpp
+++ b/src/libCom/test/epicsTimerTest.cpp
@@ -73,7 +73,7 @@ inline double delayVerify::delay () const
 
 double delayVerify::checkError () const
 {
-    const double messageThresh = 0.5; // percent 
+    const double messageThresh = 1.0; // percent 
     double actualDelay =  this->expireStamp - this->beginStamp;
     double measuredError = actualDelay - this->expectedDelay;
     double percentError = 100.0 * fabs ( measuredError ) / this->expectedDelay;