diff --git a/dist/tools/cppcheck/check.sh b/dist/tools/cppcheck/check.sh
index 8ce836c24..3b4b6371e 100755
--- a/dist/tools/cppcheck/check.sh
+++ b/dist/tools/cppcheck/check.sh
@@ -8,7 +8,7 @@
 # General Public License v2.1. See the file LICENSE in the top level
 # directory for more details.
 
-: "${RIOTBASE:=$(cd $(dirname $0)/../../../; pwd)}"
+: "${RIOTBASE:="$(cd "$(dirname "$0")/../../../" || exit ; pwd)"}"
 cd $RIOTBASE
 
 : "${RIOTTOOLS:=${RIOTBASE}/dist/tools}"
@@ -24,7 +24,17 @@ else
     DEFAULT_SUPPRESSIONS=--suppress="unusedStructMember"
 fi
 
-FILES=""
+# These new changes allows process locally cppcheck tests.
+CODE_FOLDERS="${RIOTBASE}/firmware/    \
+              ${RIOTBASE}/boards/      \
+              ${RIOTBASE}/examples/    \
+              ${RIOTBASE}/tests/       \
+              ${RIOTBASE}/wifi-subsys/"\
+
+# If you want to check only with changed files
+# change this file with
+# FILES=""
+FILES="${CODE_FOLDERS}"
 CPPCHECK_OPTIONS=""
 IN_FILES_SECTION=false
 while [ $# -gt 0 ]; do
diff --git a/wifi-subsys/components/uart/src/at_handler.c b/wifi-subsys/components/uart/src/at_handler.c
index a4fd73b87..04ac94999 100644
--- a/wifi-subsys/components/uart/src/at_handler.c
+++ b/wifi-subsys/components/uart/src/at_handler.c
@@ -50,6 +50,8 @@ char *symbols[4] = {
     "=",
 };
 
+/* cppcheck-suppress constParameter
+     * (reason: <is necessary verify that this data is not null>) */
 int get_symbol(char *command, size_t len, char *output) {
     for (size_t i = 0; i < len; i++) {
         for (size_t j = 0; j < 4; j++) {
@@ -103,7 +105,7 @@ esp_err_t parse_at_message(uint8_t *at_command, at_request_t *output) {
         key2 = strtok(NULL, "+");
     }
 
-    /* cppcheck-suppress nullPointerRedundantCheck
+    /* cppcheck-suppress nullPointer
      * (reason: <is necessary verify that this data is not null>) */
     memcpy(output->key, key_value, strlen(key_value) + 1);
     if (value != NULL) {