diff --git a/src/preferences/advancedsettings.h b/src/preferences/advancedsettings.h
index 606912f6b..362fdc61c 100644
--- a/src/preferences/advancedsettings.h
+++ b/src/preferences/advancedsettings.h
@@ -12,7 +12,7 @@
 
 enum AdvSettingsCols {PROPERTY, VALUE};
 enum AdvSettingsRows {DISK_CACHE, OUTGOING_PORT_MIN, OUTGOING_PORT_MAX, IGNORE_LIMIT_LAN, COUNT_OVERHEAD, RECHECK_COMPLETED, LIST_REFRESH, RESOLVE_COUNTRIES, RESOLVE_HOSTS, MAX_HALF_OPEN, SUPER_SEEDING, NETWORK_IFACE, PROGRAM_NOTIFICATIONS, TRACKER_STATUS, TRACKER_PORT,
-                    #if defined(Q_WS_WIN) || define(Q_WS_MAC)
+                    #if defined(Q_WS_WIN) || defined(Q_WS_MAC)
                       UPDATE_CHECK,
                     #endif
                       ROW_COUNT };
@@ -24,7 +24,7 @@ private:
   QSpinBox *spin_cache, *outgoing_ports_min, *outgoing_ports_max, *spin_list_refresh, *spin_maxhalfopen, *spin_tracker_port;
   QCheckBox *cb_ignore_limits_lan, *cb_count_overhead, *cb_recheck_completed, *cb_resolve_countries, *cb_resolve_hosts, *cb_super_seeding, *cb_program_notifications, *cb_tracker_status;
   QComboBox *combo_iface;
-#if defined(Q_WS_WIN) || define(Q_WS_MAC)
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
   QCheckBox *cb_update_check;
 #endif
 
@@ -61,7 +61,7 @@ public:
     delete cb_program_notifications;
     delete spin_tracker_port;
     delete cb_tracker_status;
-#if defined(Q_WS_WIN) || define(Q_WS_MAC)
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
     delete cb_update_check;
 #endif
   }
@@ -103,7 +103,7 @@ public slots:
     // Tracker
     pref.setTrackerEnabled(cb_tracker_status->isChecked());
     pref.setTrackerPort(spin_tracker_port->value());
-#if defined(Q_WS_WIN) || define(Q_WS_MAC)
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
     pref.setUpdateCheckEnabled(cb_update_check->isChecked());
 #endif
   }
@@ -228,7 +228,7 @@ protected slots:
     spin_tracker_port->setMaximum(65535);
     spin_tracker_port->setValue(pref.getTrackerPort());
     setCellWidget(TRACKER_PORT, VALUE, spin_tracker_port);
-#if defined(Q_WS_WIN) || define(Q_WS_MAC)
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
     setItem(UPDATE_CHECK, PROPERTY, new QTableWidgetItem(tr("Check for software updates")));
     cb_update_check = new QCheckBox();
     connect(cb_update_check, SIGNAL(toggled(bool)), this, SLOT(emitSettingsChanged()));
diff --git a/src/preferences/preferences.h b/src/preferences/preferences.h
index 72e3ea0bb..262cc1bdb 100644
--- a/src/preferences/preferences.h
+++ b/src/preferences/preferences.h
@@ -978,7 +978,7 @@ public:
     setValue(QString::fromUtf8("Preferences/Advanced/trackerPort"), port);
   }
 
-#if defined(Q_WS_WIN) || define(Q_WS_MAC)
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
   bool isUpdateCheckEnabled() const {
     return value(QString::fromUtf8("Preferences/Advanced/updateCheck"), true).toBool();
   }
diff --git a/src/properties/propertieswidget.cpp b/src/properties/propertieswidget.cpp
index 92a15bb22..c55441432 100644
--- a/src/properties/propertieswidget.cpp
+++ b/src/properties/propertieswidget.cpp
@@ -177,6 +177,7 @@ void PropertiesWidget::clear() {
   qDebug("Clearing torrent properties");
   save_path->clear();
   lbl_creationDate->clear();
+  pieceSize_lbl->clear();
   hash_lbl->clear();
   comment_text->clear();
   progress_lbl->clear();
@@ -247,6 +248,8 @@ void PropertiesWidget::loadTorrentInfos(const QTorrentHandle &_h) {
     if(h.has_metadata()) {
       // Creation date
       lbl_creationDate->setText(h.creation_date());
+      // Pieces size
+      pieceSize_lbl->setText(misc::friendlyUnit(h.piece_length()));
       // Comment
       comment_text->setHtml(h.comment());
       // URL seeds
diff --git a/src/properties/propertieswidget.ui b/src/properties/propertieswidget.ui
index 6fc32091a..10785888f 100644
--- a/src/properties/propertieswidget.ui
+++ b/src/properties/propertieswidget.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>540</width>
-    <height>329</height>
+    <height>274</height>
    </rect>
   </property>
   <property name="font">
@@ -53,9 +53,9 @@
           <property name="geometry">
            <rect>
             <x>0</x>
-            <y>0</y>
+            <y>-92</y>
             <width>520</width>
-            <height>355</height>
+            <height>377</height>
            </rect>
           </property>
           <layout class="QVBoxLayout" name="verticalLayout_2">
@@ -497,6 +497,49 @@
                </layout>
               </item>
               <item row="3" column="0">
+               <widget class="QLabel" name="label_3">
+                <property name="text">
+                 <string>Pieces size:</string>
+                </property>
+                <property name="alignment">
+                 <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+                </property>
+               </widget>
+              </item>
+              <item row="3" column="1">
+               <layout class="QHBoxLayout" name="horizontalLayout_7">
+                <item>
+                 <widget class="QLabel" name="pieceSize_lbl">
+                  <property name="sizePolicy">
+                   <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+                    <horstretch>0</horstretch>
+                    <verstretch>0</verstretch>
+                   </sizepolicy>
+                  </property>
+                  <property name="text">
+                   <string notr="true">piece size</string>
+                  </property>
+                  <property name="textInteractionFlags">
+                   <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <spacer name="horizontalSpacer_8">
+                  <property name="orientation">
+                   <enum>Qt::Horizontal</enum>
+                  </property>
+                  <property name="sizeHint" stdset="0">
+                   <size>
+                    <width>40</width>
+                    <height>14</height>
+                   </size>
+                  </property>
+                 </spacer>
+                </item>
+               </layout>
+              </item>
+              <item row="4" column="0">
                <widget class="QLabel" name="comment_lbl2">
                 <property name="text">
                  <string>Comment:</string>
@@ -506,7 +549,7 @@
                 </property>
                </widget>
               </item>
-              <item row="3" column="1">
+              <item row="4" column="1">
                <layout class="QHBoxLayout" name="horizontalLayout_4">
                 <item>
                  <widget class="QTextBrowser" name="comment_text">
@@ -519,6 +562,7 @@ p, li { white-space: pre-wrap; }
 &lt;tr&gt;
 &lt;td style=&quot;border: none;&quot;&gt;
 &lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;/p&gt;
 &lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Sans';&quot;&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/body&gt;&lt;/html&gt;</string>
                   </property>
                   <property name="openExternalLinks">