diff --git a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer
index 0bc288af1..f38294ae6 100755
Binary files a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer and b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer differ
diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
index de94d8dcc..b1919fd4e 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
@@ -2260,8 +2260,19 @@ void enableCurrentSource(int fix, uint64_t select, int normal) {
 
     } else {
         // select
-        LOG(logINFO, ("\tSetting selection to 0x%lx\n", (long unsigned int)select));
-        set64BitReg(select, CRRNT_SRC_COL_LSB_REG, CRRNT_SRC_COL_MSB_REG);
+        // invert select first
+        uint64_t tmp = select;
+        uint64_t inverted = 0;
+        for (int i = 0; i != 64; ++i) {
+            // get each bit from LSB side
+            uint64_t bit = (tmp >> i) & 0x1;
+            // push the bit into MSB side
+            inverted |= (bit << (63 - i));
+        }
+        LOG(logINFO, ("\tSetting selection to 0x%lx (inverted from 0x%lx)\n", 
+        (long unsigned int) inverted, (long unsigned int)select));
+        set64BitReg(inverted, CRRNT_SRC_COL_LSB_REG, CRRNT_SRC_COL_MSB_REG);
+
         // normal
         if (normal) {
             LOG(logINFO, ("\tEnabling normal\n"))
@@ -2314,7 +2325,18 @@ uint64_t getSelectCurrentSource() {
         return ((bus_r(DAQ_REG) & DAQ_CRRNT_SRC_CLMN_SLCT_MSK) >>
                 DAQ_CRRNT_SRC_CLMN_SLCT_OFST);
     } else {
-        return get64BitReg(CRRNT_SRC_COL_LSB_REG, CRRNT_SRC_COL_MSB_REG);
+        // invert the select
+        uint64_t retval = get64BitReg(CRRNT_SRC_COL_LSB_REG, CRRNT_SRC_COL_MSB_REG);
+
+        uint64_t tmp = retval;
+        uint64_t inverted = 0;
+        for (int i = 0; i != 64; ++i) {
+            // get each bit from LSB side
+            uint64_t bit = (tmp >> i) & 0x1;
+            // push the bit into MSB side
+            inverted |= (bit << (63 - i));
+        }  
+        return inverted;     
     }
 }
 
diff --git a/slsSupportLib/include/sls/versionAPI.h b/slsSupportLib/include/sls/versionAPI.h
index 30bad18b9..3c6eed92a 100644
--- a/slsSupportLib/include/sls/versionAPI.h
+++ b/slsSupportLib/include/sls/versionAPI.h
@@ -9,7 +9,7 @@
 #define APICTB 0x211019
 #define APIGOTTHARD 0x211019
 #define APIGOTTHARD2 0x211019
-#define APIJUNGFRAU 0x211019
 #define APIMYTHEN3 0x211019
 #define APIMOENCH 0x211019
 #define APIEIGER 0x211019
+#define APIJUNGFRAU 0x211019