diff --git a/tsk2html b/tsk2html
old mode 100644
new mode 100755
index 095dfc3..4452568
--- a/tsk2html
+++ b/tsk2html
@@ -29,6 +29,7 @@
 # EXIT STATES:
 #    0 = success
 #    1 = (t)csh is not supported
+#   16 = mawk is not supported
 #    2 = base64 is not installed
 #    3 = openssl is not installed 
 #    4 = sleuthkit is not installed
@@ -49,9 +50,9 @@
 #     istat and icat (The Sleuth Kit) out of a supplied image.
 #
 # REQUIREMENTS (Linux):
-#   awk, base64, basename, cat, date, dirname, file, fls, fsstat, grep, icat,
-#     img_stat, istat, ln, mkdir, mmls, openssl, printf, ps, sed, stat, tail
-#     and uname
+#   (g)awk (mawk is not supported!), base64, basename, cat, date, dirname, file,
+#     fls, fsstat, grep, icat, img_stat, istat, ln, mkdir, mmls, openssl,
+#     printf, ps, sed, stat, tail and uname
 #   
 # BUGS:
 #   ---
@@ -79,7 +80,7 @@
 #   (privately)
 #
 # VERSION:
-#   1.0
+#   1.1
 #
 # LINK TO THE MOST CURRENT VERSION:
 #   (Sorry, I bet, I'm not allowed to publish it over GitHub!)
@@ -87,8 +88,11 @@
 # CREATED:
 #   2016-11-11
 #
+# LAST MODIFIED:
+#   2019-09-12
+#
 # COPYRIGHT (C):
-#   2016 - Patrick Neumann
+#   2016-2019 - Patrick Neumann
 #
 # LICENSE:
 #   This program is free software: you can redistribute it and/or modify
@@ -114,6 +118,9 @@
 #
 # HISTORY:
 #   1.0 - Patrick Neumann - Initial (for the trainers eyes only) release
+#   1.1 - Patrick Neumann - added exit 16 if only mawk is available
+#                         - fixed support for empty desc in mmls
+#                         - fixed some calculation (base of 10 inseead of 8)
 #
 #===============================================================================
 
@@ -167,6 +174,12 @@ readonly BIN_UNAME="$( ${BIN_WHICH} "uname" )"                    # common
 #-------------------------------------------------------------------------------
 # Check(s) for the existence of additional mandatory software.
 #-------------------------------------------------------------------------------
+# mawk is not supported!
+if ${BIN_AWK} -W version 2>/dev/null | grep -E "^mawk" > /dev/null 2>&1 ; then
+  ${BIN_PRINTF} "\n\033[01;31;40mERROR: please install gawk instead of mawk and retry... EXIT!!!\033[00m\n\n"
+  exit 16
+fi
+
 # uncommon on FreeBSD 11
 if [ -z "${BIN_BASE64}" ] ; then
   ${BIN_PRINTF} "\n\033[01;31;40mERROR: please install base64 and retry... EXIT!!!\033[00m\n\n"
@@ -835,7 +848,7 @@ render_partition_table() {
       if [ -f "${FOLDER}/PART_${cnt}/fsstat.html" ] ; then
         line="${line}|[<a href='PART_${cnt}/fsstat.html'>fsstat</a>]"
         line="${line} [<a href='PART_${cnt}/fls.html'>fls</a>]"
-        LC_ALL=C cnt="$( ${BIN_PRINTF} "%03d" "$(( cnt + 1 ))" )"
+        LC_ALL=C cnt="$( ${BIN_PRINTF} "%03d" "$(( 10#$cnt + 1 ))" )"
       else
         line="${line}|-----"
       fi
@@ -1018,7 +1031,7 @@ if [ -n "${MMLS}" ] ; then
 	readonly UNITS="$( ${BIN_PRINTF} "%s" "${MMLS}" | ${BIN_SED} -n "3p" )"
 	readonly PARTITIONS_DATA="$( ${BIN_PRINTF} "%s" "${MMLS}" \
 	  | ${BIN_GREP} --extended-regexp "^[[:digit:]]" \
-	  | ${BIN_AWK} 'BEGIN{ OFS="|"; CNT=1; } { description = substr( $0, index( $0, $6 ) ); gsub( /\|/, " ", description ); print CNT++, $2, $3, $4, $5, description }' )"
+	  | ${BIN_AWK} 'BEGIN{ OFS="|"; CNT=1; } { if ($6) description = substr( $0, index( $0, $6 ) ); else description = "-"; gsub( /\|/, " ", description ); print CNT++, $2, $3, $4, $5, description }' )"
 # Filesystem (or whatever) without a partition
 else
 	readonly SCHEME="No partition type found"
@@ -1084,7 +1097,7 @@ EOF
     render_template "${FLS}" >> "${FOLDER}/PART_${cnt}/fls.html"
     render_template "${FOOTER}" >> "${FOLDER}/PART_${cnt}/fls.html"
   fi
-  LC_ALL=C cnt="$( ${BIN_PRINTF} "%03d" "$(( cnt + 1 ))" )"
+  LC_ALL=C cnt="$( ${BIN_PRINTF} "%03d" "$(( 10#$cnt + 1 ))" )"
 done
 
 #-------------------------------------------------------------------------------