diff --git a/client/src/components/Common/Heading.vue b/client/src/components/Common/Heading.vue
index 811965c8b45..d020f824097 100644
--- a/client/src/components/Common/Heading.vue
+++ b/client/src/components/Common/Heading.vue
@@ -1,5 +1,6 @@
-<script setup>
+<script setup lang="ts">
 import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
+import type { PropType } from "vue";
 
 let element = "h1";
 let sizeClass = "h-lg";
@@ -14,14 +15,13 @@ const props = defineProps({
     bold: Boolean,
     separator: Boolean,
     inline: Boolean,
-    // acceptable sizes are "xl", "lg", "md", "sm", and "text"
-    size: String,
+    size: String as PropType<"xl" | "lg" | "md" | "sm" | "text">,
     icon: String,
 });
 
 // apply heading element
 for (const key of ["h1", "h2", "h3", "h4", "h5", "h6"]) {
-    if (props[key]) {
+    if (props[key as keyof typeof props.size]) {
         element = key;
         break;
     }
diff --git a/client/src/components/JobMetrics/CarbonEmissions/CarbonEmissionsCalculations.vue b/client/src/components/JobMetrics/CarbonEmissions/CarbonEmissionsCalculations.vue
index cea83a67ad3..d2128a39b52 100644
--- a/client/src/components/JobMetrics/CarbonEmissions/CarbonEmissionsCalculations.vue
+++ b/client/src/components/JobMetrics/CarbonEmissions/CarbonEmissionsCalculations.vue
@@ -36,7 +36,7 @@ const greenAlgorithmsUrl = "https://www.green-algorithms.org/";
 <template>
     <article class="mt-4">
         <header>
-            <Heading h1 separator bold size="h-lg">Carbon Emissions Calculations</Heading>
+            <Heading h1 separator bold size="lg">Carbon Emissions Calculations</Heading>
 
             <p>
                 Our calculations are based off of the work of the