diff --git a/slsDetectorSoftware/src/CmdProxy.cpp b/slsDetectorSoftware/src/CmdProxy.cpp
index 6b84e770d..dc61cc538 100644
--- a/slsDetectorSoftware/src/CmdProxy.cpp
+++ b/slsDetectorSoftware/src/CmdProxy.cpp
@@ -1146,6 +1146,9 @@ std::string CmdProxy::DacList(const int action) {
             throw sls::RuntimeError("This detector already has fixed dac "
                                     "names. Cannot change them.");
         }
+        if (det_id != -1) {
+            throw sls::RuntimeError("Cannot configure dacnames at module level");
+        }
         if (args.size() != 18) {
             WrongNumberOfParameters(18);
         }
diff --git a/slsDetectorSoftware/src/DetectorImpl.h b/slsDetectorSoftware/src/DetectorImpl.h
index 92d364556..af1ec71ac 100644
--- a/slsDetectorSoftware/src/DetectorImpl.h
+++ b/slsDetectorSoftware/src/DetectorImpl.h
@@ -388,7 +388,7 @@ class DetectorImpl : public virtual slsDetectorDefs {
 
     const int detectorIndex{0};
     sls::SharedMemory<sharedDetector> shm{0, -1};
-    sls::SharedMemory<CtbConfig> ctb_shm{0, -1, "a"};
+    sls::SharedMemory<CtbConfig> ctb_shm{0, -1, CtbConfig::shm_tag()};
     std::vector<std::unique_ptr<sls::Module>> modules;
 
     /** data streaming (down stream) enabled in client (zmq sckets created) */
diff --git a/slsDetectorSoftware/src/SharedMemory.h b/slsDetectorSoftware/src/SharedMemory.h
index 70be4e741..b45f06032 100644
--- a/slsDetectorSoftware/src/SharedMemory.h
+++ b/slsDetectorSoftware/src/SharedMemory.h
@@ -126,10 +126,8 @@ template <typename T> class SharedMemory {
             RemoveSharedMemory();
             throw SharedMemoryError(msg);
         }
-        // int *pInt = new (buf) int(3);
-
         shared_struct = MapSharedMemory();
-        new (shared_struct) T{}; // is this ok? 
+        new (shared_struct) T{}; 
         LOG(logINFO) << "Shared memory created " << name;
     }