diff --git a/Makefile b/Makefile
index e41b6d6..6a54724 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,18 @@
+# Makefile - CVE-2017-5715 user-to-user sucess rate measurement
+# 
+# Copyright (c) 2022 Samuel AUBERTIN
+# 
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .PHONY: clean build upload 
 .SILENT:
 .NOTPARALLEL:
@@ -62,6 +77,7 @@ all: upload
 
 upload: $(RESULTS_FILE)
 	echo -e "\033[4mUploading $^ to www.sk4.nz\033[0m"
+	chmod 600 $(SSH_KEY)
 	sftp -b - -i $(SSH_KEY) -o BatchMode=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
 		octoupload@www.sk4.nz: <<< $$'put $^'
 
@@ -79,7 +95,6 @@ build: $(PROGS)
 	echo -e "\033[4mCPU\033[0m\t\t"$$(LC_ALL=en_US.UTF-8 lscpu | grep "Model name" | cut -d":" -f 2 | sort | uniq | awk '{$$1=$$1;print}') $(TEE)
 	echo -e "\033[4mMicrocode\033[0m\t"$$(grep microcode /proc/cpuinfo | sort | uniq | awk '{print $$NF}') $(TEE)
 	echo -e "\033[4mKernel\033[0m\t\t"$$(uname -svm) $(TEE)
-	echo -e "\033[4mKRETPOLINE\033[0m\t"$$(cat /boot/config-$$(uname -r) | grep RETPOLINE)
 	echo -e "\033[4mClang\033[0m\t\t"$$(clang -v 2>&1 | head -n 1) $(TEE)
 	echo -e "\033[4mGCC\033[0m\t\t"$$(gcc -v 2>&1 | grep 'gcc version') $(TEE)
 	echo -e "\033[4mVulnerablities\033[0m" $(TEE)