diff --git a/scripts/install b/scripts/install
index c70866a..dcdea83 100755
--- a/scripts/install
+++ b/scripts/install
@@ -76,8 +76,14 @@ then
     then
         gpg --keyserver pgpkeys.mit.edu --recv-key 8B48AD6246925553
     fi
-    gpg -a --export 7638D0442B90D010 | apt-key add -
-    gpg -a --export 8B48AD6246925553 | apt-key add -
+    if [ $(apt-key finger | grep "7638 D044 2B90 D010" -c) == 0 ]
+    then
+        gpg -a --export 7638D0442B90D010 | apt-key add -
+    fi
+    if [ $(apt-key finger | grep "8B48 AD62 4692 5553" -c) == 0 ]
+    then
+        gpg -a --export 8B48AD6246925553 | apt-key add -
+    fi
 fi
 ynh_package_update
 ynh_install_app_dependencies minetest-server