diff --git a/signalgen.py b/signalgen.py
index 235c663..96348f0 100755
--- a/signalgen.py
+++ b/signalgen.py
@@ -126,13 +126,27 @@ def addBurst(values):
 	show_dynamic(injectedSpectra, f"{basename} Dynamic Spectra and {values.dm} DM Pulse", save=True)
 	#now generate new filterbank file
 	newName = f"{basename}_injected.fil"
-	#build header from original file
-	headerDic = filterbankObj.your_header.__dict__
-	#remove extraneous keys
-	for key in ['filelist', 'filename']:
-		headerDic.pop(key, None)
-	headerDic['rawdatafile'] = newName
-	sigprocObj = make_sigproc_object(**headerDic)	
+	sigprocObj = make_sigproc_object(
+		rawdatafile=newName, #d
+		source_name="TEMP", #d
+		nchans=filterbankObj.nchans,
+		foff=filterbankObj.your_header.foff,  # MHz
+		fch1=filterbankObj.your_header.fch1,  # MHz
+		tsamp=filterbankObj.your_header.tsamp,  # seconds
+		tstart=filterbankObj.your_header.tstart,  # MJD
+		src_raj=filterbankObj.your_header.ra_deg,  
+		src_dej=filterbankObj.your_header.dec_deg,  
+		machine_id=0,
+		nbeams=0,
+		ibeam=0,
+		nbits=filterbankObj.your_header.nbits,
+		nifs=1,
+		barycentric=0,
+		pulsarcentric=0,
+		data_type=0,
+		az_start=-1,
+		za_start=-1,
+	)	
 	sigprocObj.write_header(newName)
 	sigprocObj.append_spectra(injectedSpectra, newName)
 	logger.info(f"{newName} successfully written.")