diff --git a/src/compare-with-threshold.sh b/src/compare-with-threshold.sh
index 124852b..eeed8c6 100755
--- a/src/compare-with-threshold.sh
+++ b/src/compare-with-threshold.sh
@@ -5,11 +5,10 @@ compare_with_threshold() {
   threshold="${2}"
   file_path="${3}"
 
-  result=$((threshold - score))
-  if awk -v r="${result}" 'BEGIN {exit !(r < 0)}'; then
+  if awk -v t="${threshold}" -v s="${score}" 'BEGIN {exit !((t - s) < 0)}'; then
     log_error "NSFW content detected in ${file_path} with score ${score}."
     exit 1
-  elif awk -v r="${result}" 'BEGIN {exit !(r > 0.3)}'; then
+  elif awk -v t="${threshold}" -v s="${score}" 'BEGIN {exit !((t - s) > 0.3)}'; then
     log_info "No NSFW content detected in ${file_path} with score ${score}."
   else
     log_warning "${file_path} with score ${score} is close to be considered as NSFW content."