diff --git a/conf/gnss-sdr_GPS_L1_ishort.conf b/conf/gnss-sdr_GPS_L1_ishort.conf
index 9908ada1b..1d76c2a2f 100644
--- a/conf/gnss-sdr_GPS_L1_ishort.conf
+++ b/conf/gnss-sdr_GPS_L1_ishort.conf
@@ -31,13 +31,20 @@ SignalSource.enable_throttle_control=false
 ;######### SIGNAL_CONDITIONER CONFIG ############
 SignalConditioner.implementation=Signal_Conditioner
 
-DataTypeAdapter.implementation=Ishort_To_Cshort
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Ishort_To_Complex
+
+;######### INPUT_FILTER CONFIG ############
 InputFilter.implementation=Pass_Through
-InputFilter.item_type=cshort
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+
+;######### RESAMPLER CONFIG ############
 Resampler.implementation=Direct_Resampler
 Resampler.sample_freq_in=4000000
 Resampler.sample_freq_out=2000000
-Resampler.item_type=cshort
+Resampler.item_type=gr_complex
+
 
 ;######### CHANNELS GLOBAL CONFIG ############
 Channels_1C.count=8
@@ -47,7 +54,7 @@ Channel.signal=1C
 
 ;######### ACQUISITION GLOBAL CONFIG ############
 Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition
-Acquisition_1C.item_type=cshort
+Acquisition_1C.item_type=gr_complex
 Acquisition_1C.coherent_integration_time_ms=1
 Acquisition_1C.pfa=0.01
 ;Acquisition_1C.pfa=0.000001
@@ -59,7 +66,7 @@ Acquisition_1C.blocking=false;
 
 ;######### TRACKING GLOBAL CONFIG ############
 Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
-Tracking_1C.item_type=cshort
+Tracking_1C.item_type=gr_complex
 Tracking_1C.pll_bw_hz=40.0;
 Tracking_1C.dll_bw_hz=4.0;
 Tracking_1C.order=3;