diff --git a/common/workunit/workunit.cpp b/common/workunit/workunit.cpp
index ba694168327..07cbd836f8b 100644
--- a/common/workunit/workunit.cpp
+++ b/common/workunit/workunit.cpp
@@ -1423,7 +1423,6 @@ class GraphScopeIterator : public CInterfaceOf<IConstWUScopeIterator>
         SDone
     };
     State state = SDone;
-    State nextState = SDone;
 
 public:
     GraphScopeIterator(const IConstWorkUnit * wu, const ScopeFilter & _filter) : graphIter(&wu->getGraphs(GraphTypeAny)), filter(_filter)
diff --git a/dali/base/dasds.cpp b/dali/base/dasds.cpp
index e5daa59a8a3..9c577fb2f5f 100644
--- a/dali/base/dasds.cpp
+++ b/dali/base/dasds.cpp
@@ -1117,7 +1117,6 @@ class CDeltaWriter : implements IThreaded
     unsigned transactionQueueLimit = defaultDeltaTransactionQueueLimit; // absolute limit, will block if this far behind
     memsize_t transactionMaxMem = defaultDeltaMemMaxMB * 0x100000; // 10MB
     unsigned totalQueueLimitHits = 0;
-    unsigned addQueueWaiting = 0;
     unsigned saveThresholdSecs = 0;
     cycle_t lastSaveTime = 0;
     cycle_t thresholdDuration = 0;
diff --git a/roxie/roxiemem/roxiemem.cpp b/roxie/roxiemem/roxiemem.cpp
index 7a38ed6a317..7f3570fadc2 100644
--- a/roxie/roxiemem/roxiemem.cpp
+++ b/roxie/roxiemem/roxiemem.cpp
@@ -4552,7 +4552,6 @@ class CChunkingRowManager : public CRowManager
     unsigned dataBuffs;
     unsigned dataBuffPages;
     unsigned reportWalkFreeThreshold = 256;
-    unsigned attachSeq = 0;
     std::atomic_uint possibleGoers = {0};
     std::atomic_uint totalHeapPages = {0};
     Owned<IActivityMemoryUsageMap> peakUsageMap;
diff --git a/roxie/udplib/udpmsgpk.cpp b/roxie/udplib/udpmsgpk.cpp
index a20f29d17c4..c39762c2295 100644
--- a/roxie/udplib/udpmsgpk.cpp
+++ b/roxie/udplib/udpmsgpk.cpp
@@ -70,10 +70,6 @@ class PackageSequencer : public CInterface, implements IInterface
     unsigned maxSeqSeen = 0;
     unsigned numPackets = 0;
     bool outOfBand = false;
-#ifdef _DEBUG
-    unsigned scans = 0;
-    unsigned overscans = 0;
-#endif
 
     MemoryBuffer metadata;
     InterruptableSemaphore dataAvailable; // MORE - need to work out when to interrupt it!