diff --git a/src/Frame.cpp b/src/Frame.cpp
index 3561875..d9aec6f 100644
--- a/src/Frame.cpp
+++ b/src/Frame.cpp
@@ -91,11 +91,8 @@ Frame::Frame(int _width,
 
 
 
-Frame::Frame(Frame &src)
+Frame::Frame(Frame const& src)
 {
-    // free memory if allocated before.
-    release();
-
     // Copy fields.
     width = src.width;
     height = src.height;
@@ -267,7 +264,7 @@ void Frame::cloneTo(Frame& dst)
 
 
 
-bool Frame::operator==(Frame &src)
+bool Frame::operator==(Frame const& src) const
 {
     // Check yourself.
     if (this == &src)
@@ -296,31 +293,9 @@ bool Frame::operator==(Frame &src)
 
 
 
-bool Frame::operator!=(Frame &src)
+bool Frame::operator!=(Frame const& src) const
 {
-    // Check yourself.
-    if (this == &src)
-        return false;
-
-    // Check frame atributes.
-    if (width != src.width ||
-        height != src.height ||
-        fourcc != src.fourcc ||
-        frameId != src.frameId ||
-        sourceId != src.sourceId ||
-        size != src.size)
-        return true;
-
-    // Compare frame data.
-    if (data == src.data)
-        return false;
-
-    if (size > 0 && src.size > 0)
-        for (int i = 0; i < size; ++i)
-            if (data[i] != src.data[i])
-                return true;
-
-    return false;
+    return !(*this == src);
 }
 
 
@@ -478,4 +453,4 @@ bool Frame::deserialize(uint8_t* _data, int _size)
         memcpy(data, &_data[pos], size);
 
     return true;
-}
\ No newline at end of file
+}
diff --git a/src/Frame.h b/src/Frame.h
index 84efc32..f792fd3 100644
--- a/src/Frame.h
+++ b/src/Frame.h
@@ -96,7 +96,7 @@ class Frame
      * @brief Copy class constructor.
      * @param src Source class object.
      */
-    Frame(Frame& src);
+    Frame(Frame const& src);
 
     /**
      * @brief Class destructor.
@@ -114,14 +114,14 @@ class Frame
      * @param src Source frame object.
      * @return TRUE if the frames are not identical or FALSE.
      */
-    bool operator!= (Frame& src);
+    bool operator!= (Frame const& src) const;
 
     /**
      * @brief Operator "==". Operator to compare two frame objects.
      * @param src Source frame object.
      * @return TRUE if the frames are identical or FALSE.
      */
-    bool operator== (Frame& src);
+    bool operator== (Frame const& src) const;
 
     /**
      * @brief Clone data. Method copies frame and copy just pointer to data.
@@ -171,4 +171,4 @@ class Frame
     bool m_isAllocated{false};
 };
 }
-}
\ No newline at end of file
+}