diff --git a/packages/react-params/src/Param/Hash160.tsx b/packages/react-params/src/Param/Hash160.tsx
index 5a509ae95e..62acc4a9cb 100644
--- a/packages/react-params/src/Param/Hash160.tsx
+++ b/packages/react-params/src/Param/Hash160.tsx
@@ -10,6 +10,7 @@ import BaseBytes from './BaseBytes';
 function Hash160 ({ className = '', defaultValue, isDisabled, isError, label, name, onChange, onEnter, onEscape, type, withLabel }: Props): React.ReactElement<Props> {
   return (
     <BaseBytes
+      asHex
       className={className}
       defaultValue={defaultValue}
       isDisabled={isDisabled}
diff --git a/packages/react-params/src/Param/Hash256.tsx b/packages/react-params/src/Param/Hash256.tsx
index 2096c626a0..208c29b5ea 100644
--- a/packages/react-params/src/Param/Hash256.tsx
+++ b/packages/react-params/src/Param/Hash256.tsx
@@ -10,6 +10,7 @@ import BaseBytes from './BaseBytes';
 function Hash256 ({ className = '', defaultValue, isDisabled, isError, label, name, onChange, onEnter, onEscape, type, withLabel }: Props): React.ReactElement<Props> {
   return (
     <BaseBytes
+      asHex
       className={className}
       defaultValue={defaultValue}
       isDisabled={isDisabled}
diff --git a/packages/react-params/src/Param/Hash512.tsx b/packages/react-params/src/Param/Hash512.tsx
index 58b27e8ba0..6240eba25a 100644
--- a/packages/react-params/src/Param/Hash512.tsx
+++ b/packages/react-params/src/Param/Hash512.tsx
@@ -10,6 +10,7 @@ import BaseBytes from './BaseBytes';
 function Hash512 ({ className = '', defaultValue, isDisabled, isError, label, name, onChange, onEnter, onEscape, type, withLabel }: Props): React.ReactElement<Props> {
   return (
     <BaseBytes
+      asHex
       className={className}
       defaultValue={defaultValue}
       isDisabled={isDisabled}