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cmdline/apt-key.in

@@ -326,7 +326,7 @@ is_supported_keyring() {
     if [ "$FILEEXT" = 'gpg' ]; then
 	# 0x98, 0x99 and 0xC6 via octal as hex isn't supported by dashs printf
 	local BYTE_TMP_FILE=$(mktemp)
-	head -c 1 "$1" > $BYTE_TMP_FILE
+	head -c 1 "$1" > "$BYTE_TMP_FILE"
 	if printf '\231' | cmp -s - "$BYTE_TMP_FILE"; then
 	    true
 	elif printf '\230' | cmp -s - "$BYTE_TMP_FILE"; then