diff --git a/plugins/bat/class.bat.inc.php b/plugins/bat/class.bat.inc.php
index e3cf6de84..f868ebf45 100644
--- a/plugins/bat/class.bat.inc.php
+++ b/plugins/bat/class.bat.inc.php
@@ -35,7 +35,7 @@ public function __construct($enc)
         $buffer = array();
         switch (strtolower(PSI_PLUGIN_BAT_ACCESS)) {
         case 'command':
-            if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+            if ((((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
                 $_cim = WINNT::getcimv2wmi();
                 $_wmi = WINNT::initWMI('root\WMI');
                 $bufferWB = array();
diff --git a/plugins/diskload/class.diskload.inc.php b/plugins/diskload/class.diskload.inc.php
index 7e5a3f4f0..57c5a5c67 100644
--- a/plugins/diskload/class.diskload.inc.php
+++ b/plugins/diskload/class.diskload.inc.php
@@ -38,7 +38,7 @@ public function __construct($enc)
      */
     public function execute()
     {
-        if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+        if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
             $diskphys = array();
             $disklogi = array();
             try {
diff --git a/plugins/hyperv/class.hyperv.inc.php b/plugins/hyperv/class.hyperv.inc.php
index 00fc53ff1..cd415ffbf 100644
--- a/plugins/hyperv/class.hyperv.inc.php
+++ b/plugins/hyperv/class.hyperv.inc.php
@@ -38,7 +38,7 @@ public function __construct($enc)
      */
     public function execute()
     {
-        if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) switch (strtolower(PSI_PLUGIN_HYPERV_ACCESS)) {
+        if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) switch (strtolower(PSI_PLUGIN_HYPERV_ACCESS)) {
         case 'command':
             try {
                 $buffer = WINNT::_get_Win32_OperatingSystem();
diff --git a/plugins/ps/class.ps.inc.php b/plugins/ps/class.ps.inc.php
index d25b5a293..09e771393 100644
--- a/plugins/ps/class.ps.inc.php
+++ b/plugins/ps/class.ps.inc.php
@@ -38,7 +38,7 @@ public function __construct($enc)
         $buffer = "";
         switch (strtolower(PSI_PLUGIN_PS_ACCESS)) {
         case 'command':
-            if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+            if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
                 try {
                     $os_wmi = WINNT::_get_Win32_OperatingSystem();
                     $memtotal = 0;
diff --git a/plugins/psstatus/class.psstatus.inc.php b/plugins/psstatus/class.psstatus.inc.php
index d12b40489..da1e316dc 100644
--- a/plugins/psstatus/class.psstatus.inc.php
+++ b/plugins/psstatus/class.psstatus.inc.php
@@ -53,7 +53,7 @@ public function __construct($enc)
                 } else {
                     $processes = array(PSI_PLUGIN_PSSTATUS_PROCESSES);
                 }
-                if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+                if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
                     $short = true;
                     if (strcasecmp($enc, "UTF-8") == 0) {
                         foreach ($processes as $process) {
@@ -136,7 +136,7 @@ public function __construct($enc)
     public function execute()
     {
         if (defined('PSI_PLUGIN_PSSTATUS_PROCESSES') && is_string(PSI_PLUGIN_PSSTATUS_PROCESSES)) {
-            if (((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) &&
+            if ((((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) &&
                (strtolower(PSI_PLUGIN_PSSTATUS_ACCESS) == 'command')) {
                 $strBuf = PSI_PLUGIN_PSSTATUS_PROCESSES;
                 if (defined('PSI_EMU_HOSTNAME')) {
diff --git a/plugins/smart/class.smart.inc.php b/plugins/smart/class.smart.inc.php
index 271284a90..583489d54 100644
--- a/plugins/smart/class.smart.inc.php
+++ b/plugins/smart/class.smart.inc.php
@@ -76,7 +76,7 @@ public function __construct($enc)
 
         switch (strtolower(PSI_PLUGIN_SMART_ACCESS)) {
         case 'wmi':
-            if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+            if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
                 if ((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME') && !WINNT::isAdmin()) {
                     $this->global_error->addError("SMART WMI mode error", "Mode allowed for WinNT systems, with administrator privileges (run as administrator)");
                 } else {
diff --git a/plugins/stablebit/class.stablebit.inc.php b/plugins/stablebit/class.stablebit.inc.php
index 1db715510..9aa8e8b16 100644
--- a/plugins/stablebit/class.stablebit.inc.php
+++ b/plugins/stablebit/class.stablebit.inc.php
@@ -40,7 +40,7 @@ public function __construct($enc)
      */
     public function execute()
     {
-        if ((PSI_OS == 'WINNT') || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
+        if (((PSI_OS == 'WINNT') && !defined('PSI_EMU_HOSTNAME')) || (defined('PSI_EMU_HOSTNAME') && !defined('PSI_EMU_PORT'))) {
             try {
                 $wmi = WINNT::initWMI('root\StableBit\Scanner');
                 $this->_result = WINNT::getWMI($wmi, 'Disks', $this->stablebit_items);