diff --git a/App/CDE.py b/App/CDE.py
index ff365ec..278b3ec 100644
--- a/App/CDE.py
+++ b/App/CDE.py
@@ -49,8 +49,8 @@ def compile_fun(self,e):
             with open( "program.c","w" ) as cfile:
                 cfile.write(code)
             cfile.close()
-            os.system("gcc program.c -o program")
-            os.system(".\program")
+            subprocess.call('gcc program.c -o program', shell=False)
+            subprocess.call('.\program', shell=False)
         elif language == 'C++':
             with open( "program.cpp","w" ) as cppfile:
                 cppfile.write(code)
@@ -64,7 +64,7 @@ def compile_fun(self,e):
             subprocess.call('python program.py', shell=False)
         else:
             print("Error")
-        return
+        
 if __name__ == '__main__':
     app = wx.App(False) 
     app_gui = GUI(None) 
diff --git a/README.md b/README.md
index d5d0d9e..ecb2cbc 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # CD-E Your IDE
 
+[![CodeFactor](https://www.codefactor.io/repository/github/balaji303/cde/badge/main)](https://www.codefactor.io/repository/github/balaji303/cde/overview/main)
+
  CD-E is a
 
     * Very small size,