diff --git a/plugins/00_dokku-standard/backup-import b/plugins/00_dokku-standard/backup-import
index 076c0e930..86404a99b 100755
--- a/plugins/00_dokku-standard/backup-import
+++ b/plugins/00_dokku-standard/backup-import
@@ -6,8 +6,8 @@ TARGET_DIR="$3"
 
 [[ -f $IMPORT_DIR/.sshcommand ]] && mv $IMPORT_DIR/.sshcommand $TARGET_DIR/.sshcommand
 if [[ -f $IMPORT_DIR/.ssh/authorized_keys ]]; then
-    mkdir $TARGET_DIR/.ssh
-    mv $IMPORT_DIR/.ssh/authorized_keys $TARGET_DIR/.ssh/authorized_keys
+    mkdir -p $TARGET_DIR/.ssh
+    cat $IMPORT_DIR/.ssh/authorized_keys $TARGET_DIR/.ssh/authorized_keys | uniq > $TARGET_DIR/.ssh/authorized_keys
     chmod 0700 $TARGET_DIR/.ssh
     chmod 0600 $TARGET_DIR/.ssh/*
 fi