diff --git a/fmriprep/workflows/bold/base.py b/fmriprep/workflows/bold/base.py
index dbc9c740..6f7f429a 100644
--- a/fmriprep/workflows/bold/base.py
+++ b/fmriprep/workflows/bold/base.py
@@ -695,7 +695,7 @@ def init_bold_wf(
             name='carpetplot_wf',
         )
 
-        if spaces.get_spaces(cifti=True):
+        if spaces.get_spaces(cifti=(True,)):
             workflow.connect(
                 bold_grayords_wf, 'outputnode.cifti_bold', carpetplot_wf, 'inputnode.cifti_bold',
             )  # fmt:skip