diff --git a/.travis.yml b/.travis.yml
index 4f0e630..6c622b6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,7 +34,7 @@ script:
     - stringContain() { [ -z "${2##*$1*}" ]; }
     # selectable board tests @Rotzbua
     # prints only warnings and errors, to show all remove "1>/dev/null"
-    - board="arduino_avr";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=uno --board=megaatmega1280); echo "--<Result>--"; echo "$ouput" | grep -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
-    - board="arduino_arm";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=due --board=zero); echo "--<Result>--"; echo "$ouput" | grep -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
-    - board="teensy";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=teensy20 --board=teensy31); echo "--<Result>--"; echo "$ouput" | grep -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
-    - board="esp";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=d1_mini); echo "--<Result>--"; echo "$ouput" | grep -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
+    - board="arduino_avr";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=uno --board=megaatmega1280); echo "--<Result>--"; echo "$ouput" | grep --quiet --ignore-case -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
+    - board="arduino_arm";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=due --board=zero); echo "--<Result>--"; echo "$ouput" | grep --quiet --ignore-case -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
+    - board="teensy";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=teensy20 --board=teensy31); echo "--<Result>--"; echo "$ouput" | grep --quiet --ignore-case -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi
+    - board="esp";  if stringContain "$board" "$TESTBOARD"; then echo "check board $board"; ouput=$(platformio ci --lib=. --board=d1_mini); echo "--<Result>--"; echo "$ouput" | grep --quiet --ignore-case -E "^(Device|Data|Program|text|[0-9])"; else echo "skip board test of $board"; fi