diff --git a/src/structural_pipeline/config_structural_default.json b/src/structural_pipeline/config_structural_default.json
index 585b1df..d69e2d9 100644
--- a/src/structural_pipeline/config_structural_default.json
+++ b/src/structural_pipeline/config_structural_default.json
@@ -37,7 +37,8 @@
 		"rawBvecsFile": "DTI/SUBJECT.bvecs",
 		"dwiFile": "DTI/SUBJECT_DTI.nii.gz",
 		"dwiB0ReversedFile": "",
-		"dwiReversedFile": "",		
+		"dwiReversedFile": "",
+		"synb0File": "",		
 		"preprocessingScript": "TOOLBOXDIR/structural_preprocessing/preprocess_minimal.sh", 	
 		"eddyVersion": "eddy_openmp",
 		"acqpFactor": 0.085,