diff --git a/test_coverage.sh b/test_coverage.sh
index d6c346a3..ea459be2 100755
--- a/test_coverage.sh
+++ b/test_coverage.sh
@@ -349,7 +349,7 @@ cnt=3
 while [[ ! "$status" = 0 ]] && [[ $cnt -gt 0 ]]; do
   sleep 5
   echo `date` "check signal"
-  ./src/tools/ebusctl -p 8877 state | egrep -q "signal acquired"
+  ./src/tools/ebusctl -p 8877 -t 10 state | egrep -q "signal acquired"
   status=$?
   cnt=$((cnt - 1))
 done
@@ -369,7 +369,7 @@ lstpid=$!
 for line in "${lines[@]}"; do
   if [ -n "$line" ]; then
     echo `date` "send: $line"
-    ./src/tools/ebusctl -p 8877 $line
+    ./src/tools/ebusctl -p 8877 -t 10 $line
     if [ $? -eq 1 ]; then
       echo "not connectable, exit"
       status=1
@@ -382,7 +382,7 @@ scancnt=0
 failed=0
 while [ "$status" = 0 ]; do
   sleep 3
-  output=$(./src/tools/ebusctl -p 8877 scan result)
+  output=$(./src/tools/ebusctl -p 8877 -t 10 scan result)
   status=$?
   if [ $status -ne 0 ]; then
     echo "scan result status=$status"
@@ -394,7 +394,7 @@ while [ "$status" = 0 ]; do
   scancnt=$(( scancnt + 1 ))
 done
 echo `date` "scan result after $scancnt checks:"
-./src/tools/ebusctl -p 8877 scan result
+./src/tools/ebusctl -p 8877 -t 10 scan result
 if [ $? -ne 0 ]; then
   failed=1
 fi
@@ -411,7 +411,7 @@ curl -s "http://localhost:8878/data/mc.5/installparam?poll=1&user=test&secret=te
 curl -T test_coverage.sh http://localhost:8878/data/
 echo `date` "commands done"
 kill $lstpid
-verify=`./src/tools/ebusctl -p 8877 info|egrep "^address 04:"`
+verify=`./src/tools/ebusctl -p 8877 -t 10 info|egrep "^address 04:"`
 if [ "x$verify" != 'xaddress 04: slave #25, scanned "MF=153;ID=BBBBB;SW=3031;HW=3031"' ]; then
   echo `date` "error unexpected result from info command: $verify"
   ls -latr