diff --git a/packages/opencode/src/tool/question.txt b/packages/opencode/src/tool/question.txt
index 03cd496d60a..b6ddf3c07b1 100644
--- a/packages/opencode/src/tool/question.txt
+++ b/packages/opencode/src/tool/question.txt
@@ -1,4 +1,4 @@
-Use this tool when you need to ask the user questions during execution. This allows you to:
+You MUST always use this tool when you need to ask the user questions during execution. This allows you to:
 1. Gather user preferences or requirements
 2. Clarify ambiguous instructions
 3. Get decisions on implementation choices as you work