diff --git a/lib/sb2_definitions.json b/lib/sb2_definitions.json
index ccee3c9d..83f2d093 100644
--- a/lib/sb2_definitions.json
+++ b/lib/sb2_definitions.json
@@ -174,7 +174,7 @@
                 "videoAlpha": {
                     "type": "number",
                     "minimum": 0,
-                    "maximum": 1
+                    "maximum": 100
                 },
                 "children": {
                     "type": "array",