diff --git a/BLFS/gen-makefile.sh b/BLFS/gen-makefile.sh
index 9f0685e..fd233eb 100755
--- a/BLFS/gen-makefile.sh
+++ b/BLFS/gen-makefile.sh
@@ -10,7 +10,7 @@ declare PREV_PACKAGE=""
 declare BUILD_SCRIPTS=scripts
 declare TRACKING_DIR=tracking-dir
 
-HEADER="# This file is automatically generated by jhalfs
+HEADER="# This file is automatically generated by gen-makefile.sh
 # YOU MAY NEED TO EDIT THIS FILE MANUALLY
 #
 # Generated on `date \"+%F %X %Z\"`"
@@ -247,6 +247,16 @@ EOF
 
 }
 
+if [[ -e Config.in ]] ; then
+  echo -e "${BOLD}This script must be run from inside the target package directory.${WHITE}"
+  exit 1
+fi
+
+if [[ ! -d scripts ]] ; then
+  echo -e "\n\tNo ./scripts/ directory has been found.\n"
+  exit 1
+fi
+
 generate_Makefile
 
 cp ../progress_bar.sh .