diff --git a/src/_nload b/src/_nload
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+#compdef nload
+# ------------------------------------------------------------------------------
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+# For more information, please refer to <http://unlicense.org/>
+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+#  Completion script for nload from http://www.roland-riegel.de/nload/
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+#  * Lucas Hoffmann
+#
+# ------------------------------------------------------------------------------
+
+local -a units
+units=(
+  'b\:bit'
+  'k\:kbit'
+  'm\:Mbit'
+  'g\:Gbit'
+  'B\:byte'
+  'K\:kbyte'
+  'M\:Mbyte'
+  'G\:Gbyte'
+)
+local -a units2
+units2=${units/%/\/s}
+local -a auto_units
+auto_units=(
+  'h\:auto'
+  'H\:auto'
+)
+
+_arguments \
+  '(- *)'{-h,--help}'[print the help message]' \
+  '(-a)-a[sets the length of the time window for average calculation (default 300s)]:seconds' \
+  '(-m -i)-i[specifies the 100% mark of the incoming bandwidth graph(default 10240, ignored if 0)]:kBit/s' \
+  '(-i -o -m)-m[show multiple devices at a time; no traffic graphs]' \
+  '(-m -o)-o[specifies the 100% mark of the outgoing bandwidth graph(default 10240, ignored if 0)]:kBit/s' \
+  '(-t)-t[refresh interval of the display (default 500ms)]:milliseconds' \
+  "(-u)-u[type of unit used for the display of traffic numbers (default h)]::units:(($units2 $auto_units))" \
+  "(-U)-U[type of unit used for the display of total amount of data]::units:(($units $auto_units))" \
+
+# TODO: complete network devices as last argument