diff --git a/install.py b/install.py
index 91d080e..ca3f281 100644
--- a/install.py
+++ b/install.py
@@ -82,7 +82,7 @@ class Install():
                 result = True
         elif subprocess.call("which yum", shell=True) == 0:
             subprocess.call("yum check-update", shell=True)
-            if subprocess.call("yum install mtools PyQt5 pkexec util-linux parted p7zip p7zip-plugins python3-dbus -y", shell=True) == 0:
+            if subprocess.call("dnf install mtools python3-PyQt5 util-linux parted p7zip p7zip-plugins python3-dbus -y", shell=True) == 0:
                 result = True
         elif subprocess.call("which apt-get", shell=True) == 0:
             subprocess.call("apt-get -q update", shell=True)
diff --git a/scripts/distro.py b/scripts/distro.py
index 0c788ec..0b8beab 100644
--- a/scripts/distro.py
+++ b/scripts/distro.py
@@ -60,7 +60,7 @@ def distro(iso_cfg_ext_dir, iso_link):
                             return "kaos"
                         elif re.search(r'boot=live', string, re.I) and isolinux_bin_exist(iso_link):
                             return "debian"
-                        elif re.search(r'debian-installer', string, re.I) and isolinux_bin_exist(iso_link):
+                        elif re.search(r'debian-installer', string, re.I) and not any("casper" in s.lower() for s in iso_file_list):
                             return "debian-install"
                         elif re.search(r'solydx', string, re.I):
                             return "solydx"