diff --git a/src/gausskernel/runtime/executor/execMain.cpp b/src/gausskernel/runtime/executor/execMain.cpp
index 3f8e652e5..08ef4819c 100755
--- a/src/gausskernel/runtime/executor/execMain.cpp
+++ b/src/gausskernel/runtime/executor/execMain.cpp
@@ -3074,7 +3074,7 @@ TupleTableSlot *EvalPlanQualUHeap(EState *estate, EPQState *epqstate, Relation r
         return NULL;
     }
 
-    Assert(copyTuple->tupTableType = UHEAP_TUPLE);
+    Assert(copyTuple->tupTableType == UHEAP_TUPLE);
 
     *tid = copyTuple->ctid;
 
diff --git a/src/gausskernel/runtime/executor/nodeModifyTable.cpp b/src/gausskernel/runtime/executor/nodeModifyTable.cpp
index cb19d9989..18510d378 100644
--- a/src/gausskernel/runtime/executor/nodeModifyTable.cpp
+++ b/src/gausskernel/runtime/executor/nodeModifyTable.cpp
@@ -4303,7 +4303,7 @@ ModifyTableState* ExecInitModifyTable(ModifyTable* node, EState* estate, int efl
         TupleDesc tupDesc;
 
         /* insert may only have one plan, inheritance is not expanded */
-        Assert(nplans = 1);
+        Assert(nplans == 1);
 
         /* already exists if created by RETURNING processing above */
         if (mt_state->ps.ps_ExprContext == NULL) {
diff --git a/src/gausskernel/storage/replication/logical/snapbuild.cpp b/src/gausskernel/storage/replication/logical/snapbuild.cpp
index 25cf5c0e8..b94918f8c 100644
--- a/src/gausskernel/storage/replication/logical/snapbuild.cpp
+++ b/src/gausskernel/storage/replication/logical/snapbuild.cpp
@@ -534,7 +534,7 @@ Snapshot SnapBuildInitialSnapshot(SnapBuild *builder)
     TransactionId tempXid;
 
     Assert(!u_sess->utils_cxt.FirstSnapshotSet);
-    Assert(u_sess->utils_cxt.XactIsoLevel = XACT_REPEATABLE_READ);
+    Assert(u_sess->utils_cxt.XactIsoLevel == XACT_REPEATABLE_READ);
 
     if (builder->state != SNAPBUILD_CONSISTENT)
         ereport(ERROR, (errmodule(MOD_LOGICAL_DECODE), errcode(ERRCODE_FEATURE_NOT_SUPPORTED),