diff --git a/Frame_C++_class_v5.0.5.pdf b/Frame_C++_class_v5.0.6.pdf
similarity index 86%
rename from Frame_C++_class_v5.0.5.pdf
rename to Frame_C++_class_v5.0.6.pdf
index a49ab43..0f6baa5 100644
Binary files a/Frame_C++_class_v5.0.5.pdf and b/Frame_C++_class_v5.0.6.pdf differ
diff --git a/README.md b/README.md
index c6045d8..f82e493 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 # **Frame C++ class**
 
-**v5.0.5**
+**v5.0.6**
 
 
 
@@ -52,6 +52,7 @@ Frame class is basic class for other projects. Main file **Frame.h** contains de
 | 5.0.3   | 22.06.2023   | - Added build guide.                                         |
 | 5.0.4   | 06.07.2023   | - Documentation updated.                                     |
 | 5.0.5   | 12.11.2023   | - Fixed errors serialization/deserialization functions.      |
+| 5.0.6   | 14.12.2023   | - Memory leakage from "=" operator fixed.                    |
 
 
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d1b34dd..39d6bf6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.13)
 ## LIBRARY-PROJECT
 ## name and version
 ################################################################################
-project(Frame VERSION 5.0.4 LANGUAGES CXX)
+project(Frame VERSION 5.0.6 LANGUAGES CXX)
 
 
 
diff --git a/src/Frame.cpp b/src/Frame.cpp
index 8523015..da374da 100644
--- a/src/Frame.cpp
+++ b/src/Frame.cpp
@@ -93,6 +93,9 @@ Frame::Frame(uint32_t _width,
 
 Frame::Frame(Frame &src)
 {
+    // free memory if allocated before.
+    release();
+
     // Copy fields.
     width = src.width;
     height = src.height;
@@ -223,6 +226,7 @@ Frame &Frame::operator= (const Frame &src)
         {
             data = new uint8_t[size];
             memset(data, 0, size);
+            m_isAllocated = true;
         }
 
         // Copy data.
diff --git a/src/FrameVersion.h b/src/FrameVersion.h
index e18308e..2e7cbc3 100644
--- a/src/FrameVersion.h
+++ b/src/FrameVersion.h
@@ -2,6 +2,6 @@
 
 #define FRAME_MAJOR_VERSION 5
 #define FRAME_MINOR_VERSION 0
-#define FRAME_PATCH_VERSION 4
+#define FRAME_PATCH_VERSION 6
 
-#define FRAME_VERSION "5.0.4"
+#define FRAME_VERSION "5.0.6"
diff --git a/test/main.cpp b/test/main.cpp
index 7fe056b..48dd401 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -63,7 +63,7 @@ int main(void)
     else
         cout << "OK" << endl << endl;
 
-    return -1;
+    return 1;
 }
 
 
@@ -511,34 +511,4 @@ bool serializationTest()
     }
 
     return true;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+}
\ No newline at end of file