diff --git a/src/main/kotlin/pw/binom/llmproxy/Main.kt b/src/main/kotlin/pw/binom/llmproxy/Main.kt
index ed4bbd1..11d4180 100644
--- a/src/main/kotlin/pw/binom/llmproxy/Main.kt
+++ b/src/main/kotlin/pw/binom/llmproxy/Main.kt
@@ -155,6 +155,12 @@ internal fun patchBody(raw: String, excluded: List<String>, thinking: List<Strin
         if (root["reasoning"] == null) {
             root["reasoning"] = JsonObject(mapOf("enabled" to JsonPrimitive(false)))
         }
+        // SGLANG_COMPAT: Qwen3.8 глушится только через chat_template_kwargs.enable_thinking=false
+        if (System.getenv("SGLANG_COMPAT") == "true") {
+            val ctk = root["chat_template_kwargs"]?.jsonObject?.toMutableMap() ?: mutableMapOf()
+            ctk["enable_thinking"] = JsonPrimitive(false)
+            root["chat_template_kwargs"] = JsonObject(ctk)
+        }
     }
 
     val provider = root["provider"]?.jsonObject?.toMutableMap() ?: mutableMapOf()