diff --git a/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
index 8c3fb618a..a55b61a28 100644
--- a/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
@@ -2066,7 +2066,7 @@ void *start_timer(void *arg) {
             // set header
             sls_detector_header *header = (sls_detector_header *)(packetData);
             header->detType = (uint16_t)myDetectorType;
-            header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+            header->version = SLS_DETECTOR_HEADER_VERSION;
             header->frameNumber = frameNr + iframes;
             header->packetNumber = i;
             header->modId = 0;
diff --git a/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
index 5366e446e..7b1162277 100644
--- a/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
@@ -3334,7 +3334,7 @@ void *start_timer(void *arg) {
             // set header
             sls_detector_header *header = (sls_detector_header *)(packetData);
             header->detType = (uint16_t)myDetectorType;
-            header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+            header->version = SLS_DETECTOR_HEADER_VERSION;
             header->frameNumber = virtual_currentFrameNumber;
             header->packetNumber = 0;
             header->modId = virtual_moduleid;
diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
index 08532457b..e7d474840 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
@@ -2686,7 +2686,7 @@ void *start_timer(void *arg) {
                     sls_detector_header *header =
                         (sls_detector_header *)(packetData);
                     header->detType = (uint16_t)myDetectorType;
-                    header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+                    header->version = SLS_DETECTOR_HEADER_VERSION;
                     header->frameNumber = frameNr + iframes;
                     header->packetNumber = pnum;
                     header->modId = virtual_moduleid;
@@ -2713,7 +2713,7 @@ void *start_timer(void *arg) {
                     sls_detector_header *header =
                         (sls_detector_header *)(packetData2);
                     header->detType = (uint16_t)myDetectorType;
-                    header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+                    header->version = SLS_DETECTOR_HEADER_VERSION;
                     header->frameNumber = frameNr + iframes;
                     header->packetNumber = pnum;
                     header->modId = virtual_moduleid;
diff --git a/slsDetectorServers/moenchDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/moenchDetectorServer/slsDetectorFunctionList.c
index 27c1bdbb1..f327b5071 100644
--- a/slsDetectorServers/moenchDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/moenchDetectorServer/slsDetectorFunctionList.c
@@ -1739,7 +1739,7 @@ void *start_timer(void *arg) {
             memset(packetData, 0, packetSize);
             sls_detector_header *header = (sls_detector_header *)(packetData);
             header->detType = (uint16_t)myDetectorType;
-            header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+            header->version = SLS_DETECTOR_HEADER_VERSION;
             header->frameNumber = frameNr + iframes;
             header->packetNumber = i;
             header->modId = 0;
diff --git a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
index 2b5c98403..215c06ba2 100644
--- a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
@@ -2605,7 +2605,7 @@ void *start_timer(void *arg) {
             // set header
             sls_detector_header *header = (sls_detector_header *)(packetData);
             header->detType = (uint16_t)myDetectorType;
-            header->version = SLS_DETECTOR_HEADER_VERSION - 1;
+            header->version = SLS_DETECTOR_HEADER_VERSION;
             header->frameNumber = virtual_currentFrameNumber;
             header->packetNumber = i;
             header->modId = virtual_moduleid;