diff --git a/theme.json b/theme.json
index 7f53d24..e5c86c2 100644
--- a/theme.json
+++ b/theme.json
@@ -53,13 +53,13 @@
 				{
 					"name": "Small",
 					"size": "16px",
-					"slug": "sm",
+					"slug": "small",
 					"fluid": false
 				},
 				{
 					"name": "Medium",
 					"size": "20px",
-					"slug": "md",
+					"slug": "medium",
 					"fluid": {
 						"min": "18px",
 						"max": "20px"
@@ -68,7 +68,7 @@
 				{
 					"name": "Large",
 					"size": "40px",
-					"slug": "lg",
+					"slug": "large",
 					"fluid": {
 						"min": "32px",
 						"max": "40px"
@@ -77,7 +77,7 @@
         {
           "name": "Extra Large",
           "size": "48px",
-          "slug": "xl",
+          "slug": "x-large",
           "fluid": {
             "min": "40px",
             "max": "48px"
@@ -260,7 +260,7 @@
           "style": "solid"
         },
         "typography": {
-          "fontSize": "var(--wp--preset--font-size--sm)",
+          "fontSize": "var(--wp--preset--font-size--small)",
           "textTransform": "uppercase"
         }
       }