diff --git a/python/src/enums.cpp b/python/src/enums.cpp
index 00c4ea876..3cd74abcd 100644
--- a/python/src/enums.cpp
+++ b/python/src/enums.cpp
@@ -279,11 +279,11 @@ void init_enums(py::module &m) {
         .export_values();
 
     py::enum_<slsDetectorDefs::M3_GainCaps>(Defs, "M3_GainCaps")
-        .value("CSR_C10pre", slsDetectorDefs::M3_GainCaps::CSR_C10pre)
-        .value("CSR_C15sh", slsDetectorDefs::M3_GainCaps::CSR_C15sh)
-        .value("CSR_C30sh", slsDetectorDefs::M3_GainCaps::CSR_C30sh)
-        .value("CSR_C50sh", slsDetectorDefs::M3_GainCaps::CSR_C50sh)
-        .value("CSR_C225ACsh", slsDetectorDefs::M3_GainCaps::CSR_C225ACsh)
-        .value("CSR_C15pre", slsDetectorDefs::M3_GainCaps::CSR_C15pre)
+        .value("M3_C10pre", slsDetectorDefs::M3_GainCaps::M3_C10pre)
+        .value("M3_C15sh", slsDetectorDefs::M3_GainCaps::M3_C15sh)
+        .value("M3_C30sh", slsDetectorDefs::M3_GainCaps::M3_C30sh)
+        .value("M3_C50sh", slsDetectorDefs::M3_GainCaps::M3_C50sh)
+        .value("M3_C225ACsh", slsDetectorDefs::M3_GainCaps::M3_C225ACsh)
+        .value("M3_C15pre", slsDetectorDefs::M3_GainCaps::M3_C15pre)
         .export_values();
 }
diff --git a/slsSupportLib/include/sls/sls_detector_defs.h b/slsSupportLib/include/sls/sls_detector_defs.h
index 412c66e4a..0848459e4 100644
--- a/slsSupportLib/include/sls/sls_detector_defs.h
+++ b/slsSupportLib/include/sls/sls_detector_defs.h
@@ -396,12 +396,12 @@ typedef struct {
 
     //gain caps Mythen3
     enum M3_GainCaps {
-        CSR_C10pre= 1<<7, 
-        CSR_C15sh = 1<<10, 
-        CSR_C30sh = 1<<11,
-        CSR_C50sh = 1<<12,
-        CSR_C225ACsh = 1<<13,
-        CSR_C15pre = 1<<14, 
+        M3_C10pre= 1<<7, 
+        M3_C15sh = 1<<10, 
+        M3_C30sh = 1<<11,
+        M3_C50sh = 1<<12,
+        M3_C225ACsh = 1<<13,
+        M3_C15pre = 1<<14, 
     };
 
 #ifdef __cplusplus