diff --git a/api_webchat/model-worker-ollama.js b/api_webchat/model-worker-ollama.js
index f8c0c0fb..9d66b757 100644
--- a/api_webchat/model-worker-ollama.js
+++ b/api_webchat/model-worker-ollama.js
@@ -65,9 +65,11 @@ self.onmessage = async function(event) {
             while (true) {
                 if (stopStreaming) {
                     stopStreaming = false;
+                    reader.cancel();
                     conversationHistory.push({ role: 'assistant', content: assistantResponseAccumulator });
                     assistantResponseAccumulator = '';
                     postMessage({ type: 'tokensDone' });
+
                     break;
                 }
                 const { done, value } = await reader.read();
diff --git a/api_webchat/model-worker-openai.js b/api_webchat/model-worker-openai.js
index a8f041d5..de9ba27c 100644
--- a/api_webchat/model-worker-openai.js
+++ b/api_webchat/model-worker-openai.js
@@ -110,6 +110,7 @@ self.onmessage = async function(event) {
         while (true) {
             if (stopStreaming) {
                 stopStreaming = false;
+                reader.cancel();
                 conversationHistory.push({ role: 'assistant', content: assistantResponseAccumulator });
                 assistantResponseAccumulator = '';
                 postMessage({ type: 'tokensDone' });