diff --git a/ets2panda/checker/ETSchecker.cpp b/ets2panda/checker/ETSchecker.cpp
index 8556428fab368b58762f763e3be2ecde65e43204..e3668a12989047f7de30b5fc08c8a141fc3060f2 100644
--- a/ets2panda/checker/ETSchecker.cpp
+++ b/ets2panda/checker/ETSchecker.cpp
@@ -196,6 +196,8 @@ void ETSChecker::CheckProgram(parser::Program *program, bool runAnalysis)
     for (auto &[_, extPrograms] : program->ExternalSources()) {
         (void)_;
         for (auto *extProg : extPrograms) {
+            checker::SavedCheckerContext savedContext(this, Context().Status(), Context().ContainingClass());
+            AddStatus(checker::CheckerStatus::IN_EXTERNAL);
             CheckProgram(extProg, VarBinder()->IsGenStdLib());
         }
     }
diff --git a/ets2panda/checker/checkerContext.h b/ets2panda/checker/checkerContext.h
index f50d37811a4ac2c5147783e34ae6e525968b1049..67d2a0cf5cc2e525d819f9e300965489f88f9aa6 100644
--- a/ets2panda/checker/checkerContext.h
+++ b/ets2panda/checker/checkerContext.h
@@ -53,6 +53,7 @@ enum class CheckerStatus : uint32_t {
     MEET_BREAK = 1U << 21U,
     MEET_CONTINUE = 1U << 22U,
     MEET_THROW = 1U << 23U,
+    IN_EXTERNAL = 1U << 24U,
 };
 
 }  // namespace ark::es2panda::checker
diff --git a/ets2panda/checker/ets/helpers.cpp b/ets2panda/checker/ets/helpers.cpp
index 6fde4aa6325eb30bcec4ff31014a876e46ee6215..3da03cd7b5dfd7e2a0b4a87e68e5070a8bdab022 100644
--- a/ets2panda/checker/ets/helpers.cpp
+++ b/ets2panda/checker/ets/helpers.cpp
@@ -2334,7 +2334,7 @@ void ETSChecker::GenerateGetterSetterPropertyAndMethod(ir::ClassProperty *origin
 {
     auto *const classDef = classType->GetDeclNode()->AsClassDefinition();
     auto *interfaceProp = originalProp->Clone(Allocator(), originalProp->Parent());
-    interfaceProp->ClearModifier(ir::ModifierFlags::GETTER_SETTER | ir::ModifierFlags::EXTERNAL);
+    interfaceProp->ClearModifier(ir::ModifierFlags::GETTER_SETTER);
 
     ASSERT(Scope()->IsClassScope());
     auto *const scope = Scope()->AsClassScope();
@@ -2369,7 +2369,7 @@ void ETSChecker::GenerateGetterSetterPropertyAndMethod(ir::ClassProperty *origin
         var = methodScope->FindLocal(name, varbinder::ResolveBindingOptions::BINDINGS);
     }
 
-    if ((originalProp->Modifiers() & ir::ModifierFlags::EXTERNAL) != 0U) {
+    if (HasStatus(CheckerStatus::IN_EXTERNAL)) {
         getter->Function()->AddFlag(ir::ScriptFunctionFlags::EXTERNAL);
     }
 
@@ -2388,7 +2388,7 @@ ir::MethodDefinition *ETSChecker::GenerateSetterForProperty(ir::ClassProperty *o
         setter->Function()->AddModifier(ir::ModifierFlags::OVERRIDE);
     }
 
-    if ((originalProp->Modifiers() & ir::ModifierFlags::EXTERNAL) != 0U) {
+    if (HasStatus(CheckerStatus::IN_EXTERNAL)) {
         setter->Function()->AddFlag(ir::ScriptFunctionFlags::EXTERNAL);
     }
 
diff --git a/ets2panda/checker/ets/object.cpp b/ets2panda/checker/ets/object.cpp
index a9b6d01793ff5aea9ead183f69c689507fe1d1f5..1e6e3c8b606f22917fb94bf33d0b781c78038553 100644
--- a/ets2panda/checker/ets/object.cpp
+++ b/ets2panda/checker/ets/object.cpp
@@ -850,10 +850,6 @@ void ETSChecker::ApplyModifiersAndRemoveImplementedAbstracts(ArenaVector<ETSFunc
 {
     for (auto *field : classType->Fields()) {
         if (field->Name() == (*it)->Name()) {
-            if (isGetSetExternal.isExternal) {
-                field->Declaration()->Node()->AddModifier(ir::ModifierFlags::EXTERNAL);
-            }
-
             field->Declaration()->Node()->AddModifier(isGetSetExternal.isGetter && isGetSetExternal.isSetter
                                                           ? ir::ModifierFlags::GETTER_SETTER
                                                       : isGetSetExternal.isGetter ? ir::ModifierFlags::GETTER
diff --git a/ets2panda/ir/astNodeFlags.h b/ets2panda/ir/astNodeFlags.h
index 6ccc32303bc603fe8237b82666c9ab6ddb164dc0..4ed01c98f077a855219243d5d121d733bcb04d79 100644
--- a/ets2panda/ir/astNodeFlags.h
+++ b/ets2panda/ir/astNodeFlags.h
@@ -60,7 +60,6 @@ enum class ModifierFlags : uint32_t {
     SETTER = 1U << 22U,
     DEFAULT_EXPORT = 1U << 23U,
     EXPORT_TYPE = 1U << 24U,
-    EXTERNAL = 1U << 25U,
     SUPER_OWNER = 1U << 26U,
     ACCESS = PUBLIC | PROTECTED | PRIVATE | INTERNAL,
     ALL = STATIC | ASYNC | ACCESS | DECLARE | READONLY | ABSTRACT,