diff --git a/tecs/tecs.c b/tecs/tecs.c
index 551c2144..cc18b2d8 100644
--- a/tecs/tecs.c
+++ b/tecs/tecs.c
@@ -443,6 +443,7 @@ int ReadTemp() {
   if (i!=4) ERR_MSG("bad answer 1");
   tempX=WeightedAverage(nX, t4[0], t4[2]);
   tempP=WeightedAverage(nP, t4[1], t4[3]);
+  if (tempP==0.0) tempP=tempX;
   if (dirtyX==0 && dirtyP==0 && noResp==0 && tim>logTime) {
     t2[0]=tempX;
     t2[1]=tempP;
@@ -698,7 +699,7 @@ int main(int argc, char *argv[])
       }
       if ('l'==opt) {
         logIt=1;
-        period=1000;
+        period=5000;
         opt=' ';
       } else if ('s'==opt) {
         logfileStd=1;