diff --git a/main/CourseTab/coursestablemanager.cpp b/main/CourseTab/coursestablemanager.cpp
index b778e8b..2270f3f 100644
--- a/main/CourseTab/coursestablemanager.cpp
+++ b/main/CourseTab/coursestablemanager.cpp
@@ -6,6 +6,7 @@
 coursesTableManager::coursesTableManager(QTableWidget *ptr, user *usrPtr)
 {
     this->gp = NULL;
+    this->gpCpy = NULL;
     this->us = usrPtr;
     this->courseTBL = ptr;
 
@@ -29,6 +30,8 @@ coursesTableManager::~coursesTableManager()
 {
     courseTBL = NULL;
     delete gp;
+    delete gpCpy;
+    gpCpy = NULL;
     gp = NULL;
 }
 /**
@@ -55,6 +58,7 @@ void coursesTableManager::setCoursesList(QString &html)
 {
     clearTable();
     gp = new GradePage(html);
+    this->gpCpy = new GradePage(*gp);
     insertJceCoursesIntoTable();
 }
 /**
@@ -294,6 +298,36 @@ void coursesTableManager::clearTable()
     gp = NULL;
     courseTBL->repaint();
 }
+/**
+ * @brief coursesTableManager::revertChanges
+ *
+ * restored data from the copy of grade page
+ * TODO: revert-> make it efficient
+ */
+void coursesTableManager::revertChanges()
+{
+    if (courseTBL->rowCount() <= 0)
+        return;
+    if (this->gpCpy == NULL)
+        return;
+    if (this->gp == NULL)
+        return;
+
+    for (int i = 0; i < courseTBL->rowCount(); ++i)
+    {
+        gradeCourse * temp = getCourseByRow(i);
+        for (gradeCourse * notChangedCourse: gpCpy->getCourses())
+        {
+        if ((temp->getGrade() != notChangedCourse->getGrade()) &&
+                (temp->getSerialNum() == notChangedCourse->getSerialNum()))
+        {
+            courseTBL->item(i,gradeCourse::CourseScheme::GRADE)->setText(QString::number(notChangedCourse->getGrade()));
+
+        }
+        }
+    }
+
+}
 
 gradeCourse *coursesTableManager::getCourseByRow(int row)
 {
diff --git a/main/CourseTab/coursestablemanager.h b/main/CourseTab/coursestablemanager.h
index bf72c42..41e8713 100644
--- a/main/CourseTab/coursestablemanager.h
+++ b/main/CourseTab/coursestablemanager.h
@@ -29,10 +29,13 @@ public:
     void influnceCourseChanged(bool status);
     void clearTable();
 
+    void revertChanges();
+
 private:
     gradegraph *graph;
     QTableWidget *courseTBL;
     GradePage *gp;
+    GradePage *gpCpy;
     user *us;
 
     gradeCourse * getCourseByRow(int row);
diff --git a/main/mainscreen.cpp b/main/mainscreen.cpp
index e6c435b..39eb484 100644
--- a/main/mainscreen.cpp
+++ b/main/mainscreen.cpp
@@ -233,6 +233,16 @@ void MainScreen::on_graphButton_clicked()
     if (!courseTableMgr->showGraph())
         QMessageBox::critical(this,tr("Error"),tr("You must to load GPA first\nClick on  'Get GPA'"));
 }
+void MainScreen::on_revertBtn_clicked()
+{
+    qDebug() << Q_FUNC_INFO;
+    if (!isBusy())
+    {
+        lock();
+        courseTableMgr->revertChanges();
+        unlock();
+    }
+}
 
 
 //EVENTS ON CALENDAR TAB
@@ -425,3 +435,4 @@ bool MainScreen::isBusy()
 {
     return this->isBlocked;
 }
+
diff --git a/main/mainscreen.h b/main/mainscreen.h
index 73066b6..cc3b63e 100644
--- a/main/mainscreen.h
+++ b/main/mainscreen.h
@@ -61,6 +61,8 @@ private slots:
     void on_labelMadeBy_linkActivated(const QString &link);
 //    void on_progressBar_valueChanged(int value);
 
+    void on_revertBtn_clicked();
+
 private:
 
     void checkLocale();
diff --git a/main/mainscreen.ui b/main/mainscreen.ui
index d0884ab..ace596d 100644
--- a/main/mainscreen.ui
+++ b/main/mainscreen.ui
@@ -508,14 +508,14 @@ font-size: 15px;
                   <number>0</number>
                  </property>
                  <item row="0" column="0">
-                  <layout class="QGridLayout" name="gridLayoutBtns">
+                  <layout class="QGridLayout" name="gridLayoutBtn">
                    <property name="leftMargin">
                     <number>0</number>
                    </property>
                    <property name="spacing">
                     <number>6</number>
                    </property>
-                   <item row="0" column="1">
+                   <item row="0" column="2">
                     <widget class="QPushButton" name="clearTableButton">
                      <property name="sizePolicy">
                       <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
@@ -523,6 +523,12 @@ font-size: 15px;
                        <verstretch>0</verstretch>
                       </sizepolicy>
                      </property>
+                     <property name="maximumSize">
+                      <size>
+                       <width>16777215</width>
+                       <height>35</height>
+                      </size>
+                     </property>
                      <property name="toolTip">
                       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Clear table&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
                      </property>
@@ -537,7 +543,7 @@ font-size: 15px;
                       <bool>true</bool>
                      </property>
                      <property name="sizePolicy">
-                      <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+                      <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
                        <horstretch>0</horstretch>
                        <verstretch>0</verstretch>
                       </sizepolicy>
@@ -559,6 +565,13 @@ font-size: 15px;
                      </property>
                     </widget>
                    </item>
+                   <item row="0" column="1">
+                    <widget class="QPushButton" name="revertBtn">
+                     <property name="text">
+                      <string>Revert Changes</string>
+                     </property>
+                    </widget>
+                   </item>
                   </layout>
                  </item>
                  <item row="1" column="0">
diff --git a/src/jceConnection/jcesslclient.cpp b/src/jceConnection/jcesslclient.cpp
index 4c72f16..b3e4579 100644
--- a/src/jceConnection/jcesslclient.cpp
+++ b/src/jceConnection/jcesslclient.cpp
@@ -172,7 +172,7 @@ bool jceSSLClient::recieveData(QString *str)
     disconnect(this, SIGNAL(readyRead()), this, SLOT(readIt()));
 
     str->append(packet);
-    qDebug() << *str; //if you want to see the whole packet, unmark me
+//    qDebug() << *str; //if you want to see the whole packet, unmark me
 
     qDebug() << Q_FUNC_INFO << "packet size: " << packetSizeRecieved << "received data lenght: " << str->length();
     qDebug() << Q_FUNC_INFO <<  "return with flag: " << recieveLastPacket;
diff --git a/src/jceData/Grades/gradeCourse.cpp b/src/jceData/Grades/gradeCourse.cpp
index 13b1a8c..d280102 100644
--- a/src/jceData/Grades/gradeCourse.cpp
+++ b/src/jceData/Grades/gradeCourse.cpp
@@ -11,6 +11,17 @@ gradeCourse::gradeCourse(int year, int semester, int courseNumInList, int serial
     this->courseNumInList = courseNumInList;
 }
 
+gradeCourse::gradeCourse(gradeCourse &other) :  Course(other.getSerialNum(),other.getName(),other.getType())
+{
+    this->points = other.points;
+    this->hours = other.hours;
+    this->grade = other.grade;
+    this->additions = other.additions;
+    this->year = other.year;
+    this->semester = other.semester;
+    this->courseNumInList = other.courseNumInList;
+}
+
 gradeCourse::~gradeCourse()
 {
 
diff --git a/src/jceData/Grades/gradeCourse.h b/src/jceData/Grades/gradeCourse.h
index 8bd67e4..9884571 100644
--- a/src/jceData/Grades/gradeCourse.h
+++ b/src/jceData/Grades/gradeCourse.h
@@ -38,6 +38,7 @@ public:
     };
 
     gradeCourse(int year, int semester, int courseNumInList, int serial, QString name, QString type, double points,double hours, double grade, QString additions);
+    gradeCourse(gradeCourse &other);
     ~gradeCourse();
 
     int getYear() const { return this->year; }
diff --git a/src/jceData/Grades/gradePage.cpp b/src/jceData/Grades/gradePage.cpp
index 47e4307..f5703b7 100644
--- a/src/jceData/Grades/gradePage.cpp
+++ b/src/jceData/Grades/gradePage.cpp
@@ -8,6 +8,14 @@ GradePage::GradePage(QString html) : Page()
     tempHtml = getString(html);
     coursesListInit(tempHtml);
 }
+
+GradePage::GradePage(GradePage &other)
+{
+    for(gradeCourse* c : other.getCourses())
+    {
+        courses.push_back(new gradeCourse(*c));
+    }
+}
 GradePage::~GradePage()
 {
     for (Course* c : courses)
diff --git a/src/jceData/Grades/gradePage.h b/src/jceData/Grades/gradePage.h
index 727c82d..741f757 100644
--- a/src/jceData/Grades/gradePage.h
+++ b/src/jceData/Grades/gradePage.h
@@ -29,6 +29,7 @@ class GradePage : public Page
 
 public:
     GradePage(QString html);
+    GradePage(GradePage &other);
     ~GradePage();
 
     void removeCourse(QString courseSerialID);
diff --git a/src/jceData/Grades/graph/gradegraph.cpp b/src/jceData/Grades/graph/gradegraph.cpp
index 025ea3a..a1ad338 100644
--- a/src/jceData/Grades/graph/gradegraph.cpp
+++ b/src/jceData/Grades/graph/gradegraph.cpp
@@ -1,9 +1,5 @@
 #include "gradegraph.h"
 #include "ui_gradegraph.h"
-/*
- * TODO: make graph understandable
- * BUG: graph bug when theres small range of years
- */
 gradegraph::gradegraph(QWidget *parent) : QDialog(parent), ui(new Ui::gradegraph)
 {
   ui->setupUi(this);