diff --git a/Sources/SwiftDocC/Model/Rendering/DocumentationContentRenderer.swift b/Sources/SwiftDocC/Model/Rendering/DocumentationContentRenderer.swift
index 1920d6ade8..f74413a4d4 100644
--- a/Sources/SwiftDocC/Model/Rendering/DocumentationContentRenderer.swift
+++ b/Sources/SwiftDocC/Model/Rendering/DocumentationContentRenderer.swift
@@ -211,11 +211,12 @@ public class DocumentationContentRenderer {
         guard let symbol = node.semantic as? Symbol,
               let currentPlatforms = documentationContext.configuration.externalMetadata.currentPlatforms,
               !currentPlatforms.isEmpty,
-              let symbolAvailability = symbol.availability
+              let symbolAvailability = symbol.availability?.availability,
+              !symbolAvailability.isEmpty // A symbol without availability items can't be in beta.
         else { return false }
 
         // Verify that if current platforms are in beta, they match the introduced version of the symbol
-        for availability in symbolAvailability.availability {
+        for availability in symbolAvailability {
             // If not available on this platform, skip to next platform.
             guard !availability.isUnconditionallyUnavailable, let introduced = availability.introducedVersion else {
                 continue
diff --git a/Tests/SwiftDocCTests/Model/SemaToRenderNodeTests.swift b/Tests/SwiftDocCTests/Model/SemaToRenderNodeTests.swift
index 5dcf9e4b63..44cbc103a7 100644
--- a/Tests/SwiftDocCTests/Model/SemaToRenderNodeTests.swift
+++ b/Tests/SwiftDocCTests/Model/SemaToRenderNodeTests.swift
@@ -1922,6 +1922,21 @@ Document
             XCTAssertEqual(renderNode.metadata.platforms?.first?.isBeta, false)
         }
         
+        // Symbol with an empty set of availbility items.
+        
+        do {
+            
+            let (bundle, context, reference) = try makeTestBundle(currentPlatforms: [
+                "Custom Name": PlatformVersion(VersionTriplet(100, 0, 0), beta: true)
+            ])
+            let node = try context.entity(with: reference)
+            (node.semantic as? Symbol)?.availability = SymbolGraph.Symbol.Availability(availability: [])
+            let documentationContentRendered = DocumentationContentRenderer(documentationContext: context, bundle: bundle)
+            let isBeta = documentationContentRendered.isBeta(node)
+            // Verify that the symbol is not beta since it does not contains availability info.
+            XCTAssertFalse(isBeta)
+        }
+        
         // Different platform is beta
         do {
             let (bundle, context, reference) = try makeTestBundle(currentPlatforms: [