diff --git a/bin/hardening/13.13_check_user_homedir_ownership.sh b/bin/hardening/13.13_check_user_homedir_ownership.sh
index f3be6b1..2812b8b 100755
--- a/bin/hardening/13.13_check_user_homedir_ownership.sh
+++ b/bin/hardening/13.13_check_user_homedir_ownership.sh
@@ -33,7 +33,7 @@ audit () {
             if [ "$OWNER" != "$USER" ]; then
                 EXCEP_FOUND=0
                 for excep in $EXCEPTIONS; do
-                    if [ "$DIR:$USER:$OWNER" == "$excep" ]; then
+                    if [ "$DIR:$USER:$OWNER" = "$excep" ]; then
                         ok "The home directory ($DIR) of user $USER is owned by $OWNER but is part of exceptions ($DIR:$USER:$OWNER)."
                         EXCEP_FOUND=1
                         break
diff --git a/bin/hardening/8.2.5_syslog-ng_remote_host.sh b/bin/hardening/8.2.5_syslog-ng_remote_host.sh
index 9ef0cfa..3f7747c 100755
--- a/bin/hardening/8.2.5_syslog-ng_remote_host.sh
+++ b/bin/hardening/8.2.5_syslog-ng_remote_host.sh
@@ -22,12 +22,12 @@ audit () {
     FILES="$SYSLOG_BASEDIR/syslog-ng.conf $(find $SYSLOG_BASEDIR/conf.d/)"
     for FILE in $FILES; do
        does_pattern_exist_in_file_multiline "$FILE" "$PATTERN"
-        if [ $FNRET == 0 ]; then
+        if [ $FNRET = 0 ]; then
             FOUND=1
         fi
     done
 
-    if [ $FOUND == 1 ]; then
+    if [ $FOUND = 1 ]; then
         ok "$PATTERN is present in $FILES"
     else
         crit "$PATTERN is not present in $FILES"
@@ -40,11 +40,11 @@ apply () {
     FILES="$SYSLOG_BASEDIR/syslog-ng.conf $(find $SYSLOG_BASEDIR/conf.d/ -type f)"
     for FILE in $FILES; do
        does_pattern_exist_in_file_multiline "$FILE" "$PATTERN"
-        if [ $FNRET == 0 ]; then
+        if [ $FNRET = 0 ]; then
             FOUND=1
         fi
     done
-    if [ $FOUND == 1 ]; then
+    if [ $FOUND = 1 ]; then
         ok "$PATTERN is present in $FILES"
     else
         crit "$PATTERN is not present in $FILES, please set a remote host to send your logs"
diff --git a/bin/hardening/8.3.2_tripwire_cron.sh b/bin/hardening/8.3.2_tripwire_cron.sh
index 190d8fd..ba3476b 100755
--- a/bin/hardening/8.3.2_tripwire_cron.sh
+++ b/bin/hardening/8.3.2_tripwire_cron.sh
@@ -25,11 +25,11 @@ audit () {
     FOUND=0
     for FILE in $FILES; do
         does_pattern_exist_in_file "$FILE" "$PATTERN"
-        if [ "$FNRET" == 0 ]; then
+        if [ "$FNRET" = 0 ]; then
             FOUND=1
         fi
     done
-    if [ $FOUND == 1 ]; then
+    if [ $FOUND = 1 ]; then
         ok "$PATTERN is present in $FILES"
     else
         crit "$PATTERN is not present in $FILES"
diff --git a/bin/hardening/99.4_net_fw_default_policy_drop.sh b/bin/hardening/99.4_net_fw_default_policy_drop.sh
index 104be24..1f2c184 100755
--- a/bin/hardening/99.4_net_fw_default_policy_drop.sh
+++ b/bin/hardening/99.4_net_fw_default_policy_drop.sh
@@ -36,7 +36,7 @@ audit () {
             # previous line will capture actual policy
             if [[ $ipt =~ $regex ]]; then
                 actual_policy=${BASH_REMATCH[1]}
-                if [[ $actual_policy == "$FW_POLICY" ]]; then
+                if [[ $actual_policy = "$FW_POLICY" ]]; then
                     ok "Policy correctly set to $FW_POLICY for chain $chain"
                 else
                     crit "Policy set to $actual_policy for chain $chain, should be ${FW_POLICY}."