diff --git a/packages/compiler-cli/src/ngtsc/typecheck/src/type_check_block.ts b/packages/compiler-cli/src/ngtsc/typecheck/src/type_check_block.ts
index 892305b241f..80b80457d68 100644
--- a/packages/compiler-cli/src/ngtsc/typecheck/src/type_check_block.ts
+++ b/packages/compiler-cli/src/ngtsc/typecheck/src/type_check_block.ts
@@ -2250,12 +2250,12 @@ class Scope {
           const firstDecl = varMap.get(v.name)!;
           tcb.oobRecorder.duplicateTemplateVar(tcb.id, v, firstDecl);
         }
-        this.registerVariable(scope, v, new TcbTemplateVariableOp(tcb, scope, scopedNode, v));
+        Scope.registerVariable(scope, v, new TcbTemplateVariableOp(tcb, scope, scopedNode, v));
       }
     } else if (scopedNode instanceof TmplAstIfBlockBranch) {
       const {expression, expressionAlias} = scopedNode;
       if (expression !== null && expressionAlias !== null) {
-        this.registerVariable(
+        Scope.registerVariable(
           scope,
           expressionAlias,
           new TcbBlockVariableOp(
@@ -2281,7 +2281,7 @@ class Scope {
         const type = ts.factory.createKeywordTypeNode(
           this.forLoopContextVariableTypes.get(variable.value)!,
         );
-        this.registerVariable(
+        Scope.registerVariable(
           scope,
           variable,
           new TcbBlockImplicitVariableOp(tcb, scope, type, variable),
diff --git a/packages/compiler/src/template/pipeline/ir/src/operations.ts b/packages/compiler/src/template/pipeline/ir/src/operations.ts
index 97eaacc2a0d..05bee6715c9 100644
--- a/packages/compiler/src/template/pipeline/ir/src/operations.ts
+++ b/packages/compiler/src/template/pipeline/ir/src/operations.ts
@@ -226,7 +226,7 @@ export class OpList<OpT extends Op<OpT>> {
 
     let prev: OpT = oldPrev!;
     for (const newOp of newOps) {
-      this.assertIsUnowned(newOp);
+      OpList.assertIsUnowned(newOp);
       newOp.debugListId = listId;
 
       prev!.next = newOp;
@@ -276,7 +276,7 @@ export class OpList<OpT extends Op<OpT>> {
   static insertBefore<OpT extends Op<OpT>>(op: OpT | OpT[], target: OpT): void {
     if (Array.isArray(op)) {
       for (const o of op) {
-        this.insertBefore(o, target);
+        OpList.insertBefore(o, target);
       }
       return;
     }