diff --git a/gaboshlib/g_num_is_lower.sh b/gaboshlib/g_num_is_lower.sh
index f5792f8..03c4e82 100644
--- a/gaboshlib/g_num_is_lower.sh
+++ b/gaboshlib/g_num_is_lower.sh
@@ -18,7 +18,7 @@ function g_num_is_lower {
   # Check for valid number
   g_num_valid_number "$f_num" "$f_checkhigher" || return 1
  
-  if [ $(echo "${f_num} < ${f_checkhigher}" | bc) -ne 0 ]
+  if [ $(g_calc "${f_num} < ${f_checkhigher}") -ne 0 ]
   then
     return 0
   else