diff --git a/src/components/Parameters/Parameters.tsx b/src/components/Parameters/Parameters.tsx
index 93d39152..34ba9574 100644
--- a/src/components/Parameters/Parameters.tsx
+++ b/src/components/Parameters/Parameters.tsx
@@ -131,4 +131,5 @@ const RequiredBody = styled(RequiredLabel)`
 const OptionalBody = styled('div')`
   ${commonStyles}
   color: ${({ theme }) => theme.colors.text.secondary};
+  font-size: ${props => props.theme.schema.labelsTextSize};
 `;