diff --git a/superset-frontend/src/views/CRUD/alert/AlertReportModal.tsx b/superset-frontend/src/views/CRUD/alert/AlertReportModal.tsx
index 6323edf3a0ca3..3a10398f748fb 100644
--- a/superset-frontend/src/views/CRUD/alert/AlertReportModal.tsx
+++ b/superset-frontend/src/views/CRUD/alert/AlertReportModal.tsx
@@ -260,7 +260,7 @@ export const StyledInputContainer = styled.div`
   .helper {
     display: block;
     color: ${({ theme }) => theme.colors.grayscale.base};
-    font-size: ${({ theme }) => theme.typography.sizes.s - 1}px;
+    font-size: ${({ theme }) => theme.typography.sizes.s}px;
     padding: ${({ theme }) => theme.gridUnit}px 0;
     text-align: left;
   }