diff --git a/packages/sushi/src/format/number.ts b/packages/sushi/src/format/number.ts
index 9736578c52..6713155398 100644
--- a/packages/sushi/src/format/number.ts
+++ b/packages/sushi/src/format/number.ts
@@ -1,6 +1,6 @@
 import numeral from 'numbro'
 
-export const formatNumber = (value: any, inputString = '0.00a') => {
+export const formatNumber = (value: any, inputString = '0.[00]a') => {
   if (typeof value === 'string') value = Number(value)
 
   let negative = false
@@ -10,9 +10,9 @@ export const formatNumber = (value: any, inputString = '0.00a') => {
   }
 
   if (value === 0) return '0.00'
-  if (value < 0.0001) return numeral(value).format('0.000000a')
-  if (value < 0.001) return numeral(value).format('0.0000a')
-  if (value < 0.01) return numeral(value).format('0.000a')
+  if (value < 0.0001) return numeral(value).format('0.[000000]a')
+  if (value < 0.001) return numeral(value).format('0.[0000]a')
+  if (value < 0.01) return numeral(value).format('0.[000]a')
   return `${negative ? '-' : ''}${numeral(value).format(inputString)}`
 }