diff --git a/files/process_motion_event.sh b/files/process_motion_event.sh
index 7bf2d13..a61fea5 100644
--- a/files/process_motion_event.sh
+++ b/files/process_motion_event.sh
@@ -234,7 +234,7 @@ if [ -n "${ntfy_server}" ]; then
   message "Sending event to ntfy server '${ntfy_server}/motion_detection' ..."
   if [ -n "${file}" ]; then
     temp_file="$(mktemp /tmp/tmp.XXXXX.mkv)"
-    result=$(ffmpeg -filter_complex '[0:v] fps=12,scale=480:-1,split [a][b];[a] palettegen [p];[b][p] paletteuse'  -i "${file}" "${temp_file}")
+    result=$(/usr/bin/ffmpeg -filter_complex '[0:v] fps=12,scale=480:-1,split [a][b];[a] palettegen [p];[b][p] paletteuse'  -i "${file}" "${temp_file}")
     return_code=$?
     if [ ${return_code} != 0 ]; then
       message "Error ${return_code} processing video file '${file}'. ${result}"