diff --git a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/LightTreeRawFirDeclarationBuilder.kt b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/LightTreeRawFirDeclarationBuilder.kt
index 664a50e4478..437f6d8bf7e 100644
--- a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/LightTreeRawFirDeclarationBuilder.kt
+++ b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/LightTreeRawFirDeclarationBuilder.kt
@@ -1161,7 +1161,7 @@ class LightTreeRawFirDeclarationBuilder(
     private fun convertConstructorDelegationCall(
         constructorDelegationCall: LighterASTNode,
         classWrapper: ClassWrapper
-    ): FirDelegatedConstructorCall {
+    ): FirDelegatedConstructorCall? {
         var thisKeywordPresent = false
         val firValueArguments = mutableListOf<FirExpression>()
         constructorDelegationCall.forEachChildren {
@@ -1172,6 +1172,9 @@ class LightTreeRawFirDeclarationBuilder(
         }
 
         val isImplicit = constructorDelegationCall.textLength == 0
+        if (isImplicit && classWrapper.modifiers.hasExternal()) {
+            return null
+        }
         val isThis = thisKeywordPresent //|| (isImplicit && classWrapper.hasPrimaryConstructor)
         val delegatedType =
             when {
diff --git a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/fir/ClassWrapper.kt b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/fir/ClassWrapper.kt
index 06f32ddebb6..596f1a5b0fd 100644
--- a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/fir/ClassWrapper.kt
+++ b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/fir/ClassWrapper.kt
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.fir.lightTree.fir.modifier.Modifier
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 
 class ClassWrapper(
-    private val modifiers: Modifier,
+    val modifiers: Modifier,
     private val classKind: ClassKind,
     val classBuilder: FirClassBuilder,
     val hasSecondaryConstructor: Boolean,
diff --git a/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/PsiRawFirBuilder.kt b/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/PsiRawFirBuilder.kt
index 2abdcc0c02e..bb249911cb1 100644
--- a/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/PsiRawFirBuilder.kt
+++ b/compiler/fir/raw-fir/psi2fir/src/org/jetbrains/kotlin/fir/builder/PsiRawFirBuilder.kt
@@ -1988,11 +1988,15 @@ open class PsiRawFirBuilder(
                     }
                     dispatchReceiverType = owner.obtainDispatchReceiverForConstructor()
                     contextReceivers.addAll(convertContextReceivers(owner.contextReceivers))
-                    delegatedConstructor = buildOrLazyDelegatedConstructorCall(
-                        isThis = isDelegatedCallToThis(),
-                        constructedTypeRef = delegatedTypeRef,
-                    ) {
-                        getDelegationCall().convert(delegatedTypeRef)
+                    val delegationCall = getDelegationCall()
+                    val hasExplicitDelegationCall = delegationCall.textLength > 0
+                    if (!owner.hasModifier(EXTERNAL_KEYWORD) || hasExplicitDelegationCall) {
+                        delegatedConstructor = buildOrLazyDelegatedConstructorCall(
+                            isThis = isDelegatedCallToThis(),
+                            constructedTypeRef = delegatedTypeRef,
+                        ) {
+                            delegationCall.convert(delegatedTypeRef)
+                        }
                     }
                     this@PsiRawFirBuilder.context.firFunctionTargets += target
                     extractAnnotationsTo(this)
diff --git a/compiler/fir/raw-fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/RawFirBuilderTotalKotlinTestCase.kt b/compiler/fir/raw-fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/RawFirBuilderTotalKotlinTestCase.kt
index b12eb91afac..da8d28b3b2f 100644
--- a/compiler/fir/raw-fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/RawFirBuilderTotalKotlinTestCase.kt
+++ b/compiler/fir/raw-fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/RawFirBuilderTotalKotlinTestCase.kt
@@ -286,6 +286,7 @@ class RawFirBuilderTotalKotlinTestCase : AbstractRawFirBuilderTestCase() {
                 it.getStrictParentOfType<KtImportDirective>() != null ||
                 (it is KtPropertyAccessor && !it.hasBody()) ||
                 it is KtDestructuringDeclarationEntry && it.text == "_" ||
+                it is KtConstructorDelegationCall && it.text == "" ||
                 it is KtIfExpression && it.parent is KtContainerNodeForControlStructureBody && it.parent.parent is KtIfExpression ||
                 it is KtContextReceiverList ||
                 it is KtContextReceiver && it.parent is KtContextReceiverList && it.parent?.parent is KtFunctionType ||