diff --git a/Configuration/TypoScript/Mixed/setup.typoscript b/Configuration/TypoScript/Mixed/setup.typoscript
index 2ea1eeeb..a54d2033 100644
--- a/Configuration/TypoScript/Mixed/setup.typoscript
+++ b/Configuration/TypoScript/Mixed/setup.typoscript
@@ -4,7 +4,7 @@ plugin.tx_headless {
     staticTemplate = 1
 }
 
-[traverse(request.getHeaders(), 'accept')[0] == 'application/json']
+[request && traverse(request.getHeaders(), 'accept')[0] == 'application/json']
     ## Include page
     @import "EXT:headless/Configuration/TypoScript/Page/*.typoscript"
     ## Include content elements
@@ -13,7 +13,7 @@ plugin.tx_headless {
     @import "EXT:headless/Configuration/TypoScript/Configuration/*.typoscript"
 [END]
 
-[traverse(request.getHeaders(), 'accept')[0] == 'application/json' && frontend.user.isLoggedIn]
+[request && traverse(request.getHeaders(), 'accept')[0] == 'application/json' && frontend.user.isLoggedIn]
     initialData.10.fields.user.fields {
         logged = BOOL
         logged.value = 1