diff --git a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
index 0c7a3cd1d..a315c9c5e 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
+++ b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
@@ -256,13 +256,17 @@ int setDAQRegister(int adcval)
   reg=bus_r(addr);
   bus_w(addr,val);
   reg=bus_r(addr);
-//#ifdef VERBOSE
+#ifdef VERBOSE
   printf("DAQ reg:%x\n",reg);
-//#endif
+#endif
 
 
+  //clean fifo
   addr=ADC_SYNC_REG;
-  val=12;
+  val=ADCSYNC_VAL | ADCSYNC_CLEAN_FIFO_BITS;
+  bus_w(addr,val);
+
+  val=ADCSYNC_VAL;
   bus_w(addr,val);
   reg=bus_r(addr);
 #ifdef VERBOSE
diff --git a/slsDetectorSoftware/gotthardDetectorServer/registers_g.h b/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
index 1e5523dbe..070252965 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
+++ b/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
@@ -276,5 +276,9 @@
 #define CHANNEL_OFFSET				16
 #define ACTIVE_ADC_MASK 		    0x0000001f
 
+
+/**ADC SYNC CLEAN FIFO*/
+#define ADCSYNC_CLEAN_FIFO_BITS     0x300000
+
 #endif
 
diff --git a/slsDetectorSoftware/gotthardDetectorServer/server_defs.h b/slsDetectorSoftware/gotthardDetectorServer/server_defs.h
index 16401c6c0..711466251 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/server_defs.h
+++ b/slsDetectorSoftware/gotthardDetectorServer/server_defs.h
@@ -33,6 +33,11 @@
 #define ALLMOD 0xffff
 #define ALLFIFO 0xffff
 
+
+
+#define ADCSYNC_VAL 0x32213
+
+
 #ifdef VIRTUAL
 #define DEBUGOUT
 #endif