diff --git a/install/Downloads/.gitignore b/install/Downloads/.gitignore
new file mode 100644
index 00000000..e69de29b
diff --git a/lib/.gitignore b/lib/.gitignore
new file mode 100644
index 00000000..e69de29b
diff --git a/setup_environment.py b/setup_environment.py
index 525f4636..61195324 100755
--- a/setup_environment.py
+++ b/setup_environment.py
@@ -144,13 +144,15 @@ def check_python():
 def check_avabiliy(binary):
 
     if binary == "zlib":
-        binary = "zlib-flate"
+        binary_name = "zlib-flate"
+    else:
+        binary_name = binary
 
     if binary == "python":
         check_python()
 
     try:
-        return check_output(["which", binary])
+        return check_output(["which", binary_name])
     except subprocess.CalledProcessError:
         default_path = d_info[binary].default_path
         if os.path.exists(default_path):