diff --git a/src/main_window.cpp b/src/main_window.cpp
index 40301ae..8b9e583 100644
--- a/src/main_window.cpp
+++ b/src/main_window.cpp
@@ -176,6 +176,14 @@ AC_MainWindow::AC_MainWindow(QWidget *parent) : QMainWindow(parent) {
     
 }
 
+bool AC_MainWindow::checkAdd(QString str) {
+    const char *ex[] = { "Bars", "BilateralFilter", "BilateralFilterFade", "BoxFilter", "CurrentDesktopRect", "HorizontalTrailsInter", "IntertwineAlpha", "IntertwineAlphaBlend", "IntertwineVideo640", "RandomAlphaBlendFilter", "RandomOrigFrame", "RectangleGlitch", "SquareSwap64x32", "VideoColorMap", 0};
+    
+    for(int i = 0; ex[i] != 0; ++i)
+        if(str == ex[i])
+            return true;
+    return false;
+}
 
 void AC_MainWindow::createControls() {
     custom_filters = new QListWidget(this);
@@ -1559,6 +1567,7 @@ void AC_MainWindow::menuFilterChanged(int index) {
         for(int i = 0; i < static_cast<int>(v.size()); ++i) {
             if(map_values.find(v[i]) == map_values.end()) {
                 map_values[v[i]] = v[i];
+                if(checkAdd(v[i].c_str()) == false)
                 filters->addItem(v[i].c_str());
             }
         }
diff --git a/src/main_window.h b/src/main_window.h
index bc58ae8..ab02312 100644
--- a/src/main_window.h
+++ b/src/main_window.h
@@ -78,6 +78,7 @@ public:
     void setSpeedIndex(int index);
     void setOptionString(std::string op, std::string value);
     void setProcMode(int index);
+    bool checkAdd(QString str);
 public slots:
     void showRange();
     void chk_Joystick();
diff --git a/src/search_box.cpp b/src/search_box.cpp
index 3871594..ee636cf 100644
--- a/src/search_box.cpp
+++ b/src/search_box.cpp
@@ -15,6 +15,14 @@ SearchWindow::SearchWindow(QWidget *parent) : QDialog(parent) {
     createControls();
 }
 
+bool SearchWindow::checkAdd(QString str) {
+    const char *ex[] = { "Bars", "BilateralFilter", "BilateralFilterFade", "BoxFilter", "CurrentDesktopRect", "HorizontalTrailsInter", "IntertwineAlpha", "IntertwineAlphaBlend", "IntertwineVideo640", "RandomAlphaBlendFilter", "RandomOrigFrame", "RectangleGlitch", "SquareSwap64x32", "VideoColorMap", 0};
+    
+    for(int i = 0; ex[i] != 0; ++i)
+        if(str == ex[i])
+            return true;
+    return false;
+}
 
 void SearchWindow::createControls() {
     search_list = new QListWidget(this);
@@ -47,7 +55,7 @@ void SearchWindow::search_filter() {
     for(int i = 0; i < ac::draw_max-6; ++i) {
         std::string search_value = lowerString(ac::draw_strings[i]);
         for(unsigned int q = 0; q < tokens.size(); ++q) {
-            if(search_value.find(tokens[q]) != std::string::npos) {
+            if(search_value.find(tokens[q]) != std::string::npos && checkAdd(ac::draw_strings[i].c_str()) == false) {
                 search_list->addItem(ac::draw_strings[i].c_str());
                 break;
             }
diff --git a/src/search_box.h b/src/search_box.h
index 3b0f2c4..202cf92 100644
--- a/src/search_box.h
+++ b/src/search_box.h
@@ -21,6 +21,8 @@ private:
     QLineEdit *search_text;
     QPushButton *search, *add, *subf;
     QComboBox *filters;
+    
+    bool checkAdd(QString str);
 };
 
 #endif