diff --git a/scripts/smoke-test.sh b/scripts/smoke-test.sh
index da93c7b..a4155eb 100755
--- a/scripts/smoke-test.sh
+++ b/scripts/smoke-test.sh
@@ -175,11 +175,14 @@ if docker run --rm \
       python3 /usr/local/lib/opencode-devbox/generate-config.py 2>/dev/null
       cat /tmp/home/.config/opencode/opencode.jsonc
     ' > "$tmp/out.jsonc" 2>/dev/null; then
-  # Strip single-line // comments for JSON validation
-  sed 's|//.*$||' "$tmp/out.jsonc" > "$tmp/out.json"
+  # Strip single-line // comments for JSON validation (respecting strings)
   if python3 -c "
-import json, sys
-c = json.load(open('$tmp/out.json'))
+import re, json, sys
+text = open('$tmp/out.jsonc').read()
+# Match either a string literal or a // comment; keep strings, drop comments
+pattern = r'\"(?:\\\\.|[^\"\\\\])*\"|//[^\n]*'
+stripped = re.sub(pattern, lambda m: m.group(0) if m.group(0).startswith('\"') else '', text)
+c = json.loads(stripped)
 assert c['model'].startswith('anthropic/'), c
 assert c['autoupdate'] is False
 assert c['share'] == 'disabled'