diff --git a/compiler/fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/AbstractRawFirBuilderTestCase.kt b/compiler/fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/AbstractRawFirBuilderTestCase.kt
index 9085bbd60b5..c29b4d55fd5 100644
--- a/compiler/fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/AbstractRawFirBuilderTestCase.kt
+++ b/compiler/fir/psi2fir/tests/org/jetbrains/kotlin/fir/builder/AbstractRawFirBuilderTestCase.kt
@@ -14,13 +14,18 @@ import com.intellij.psi.PsiFile
 import com.intellij.psi.tree.IElementType
 import com.intellij.util.PathUtil
 import org.jetbrains.kotlin.KtNodeTypes
-import org.jetbrains.kotlin.fir.*
+import org.jetbrains.kotlin.fir.FirElement
+import org.jetbrains.kotlin.fir.FirRenderer
+import org.jetbrains.kotlin.fir.FirSessionBase
 import org.jetbrains.kotlin.fir.contracts.impl.FirEmptyContractDescription
 import org.jetbrains.kotlin.fir.declarations.FirFile
-import org.jetbrains.kotlin.fir.declarations.FirResolvePhase
+import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
 import org.jetbrains.kotlin.fir.expressions.FirWrappedDelegateExpression
 import org.jetbrains.kotlin.fir.expressions.impl.FirNoReceiverExpression
 import org.jetbrains.kotlin.fir.expressions.impl.FirWrappedDelegateExpressionImpl
+import org.jetbrains.kotlin.fir.render
+import org.jetbrains.kotlin.fir.types.ConeClassLikeType
+import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 import org.jetbrains.kotlin.fir.visitors.CompositeTransformResult
 import org.jetbrains.kotlin.fir.visitors.FirTransformer
@@ -130,7 +135,7 @@ abstract class AbstractRawFirBuilderTestCase : KtParsingTestCase(
         override fun visitElement(element: FirElement) {
             // NB: types are reused sometimes (e.g. in accessors)
             if (!result.add(element)) {
-                if (element !is FirTypeRef && element !is FirNoReceiverExpression && element !is FirEmptyContractDescription) {
+                if (element !is FirTypeRef && element !is FirNoReceiverExpression && element !is FirEmptyContractDescription && !element.isExtensionFunctionAnnotationCall) {
                     val elementDump = StringBuilder().also { element.accept(FirRenderer(it)) }.toString()
                     throw AssertionError("FirElement ${element.javaClass} is visited twice: $elementDump")
                 }
@@ -147,7 +152,7 @@ abstract class AbstractRawFirBuilderTestCase : KtParsingTestCase(
 
         override fun <E : FirElement> transformElement(element: E, data: Unit): CompositeTransformResult<E> {
             if (!result.add(element)) {
-                if (element !is FirTypeRef && element !is FirNoReceiverExpression && element !is FirEmptyContractDescription) {
+                if (element !is FirTypeRef && element !is FirNoReceiverExpression && element !is FirEmptyContractDescription && !element.isExtensionFunctionAnnotationCall) {
                     val elementDump = StringBuilder().also { element.accept(FirRenderer(it)) }.toString()
                     throw AssertionError("FirElement ${element.javaClass} is visited twice: $elementDump")
                 }
@@ -165,4 +170,12 @@ abstract class AbstractRawFirBuilderTestCase : KtParsingTestCase(
         FileTypeRegistry.ourInstanceGetter = Getter<FileTypeRegistry> { FileTypeManager.getInstance() }
     }
 
-}
\ No newline at end of file
+}
+
+private val FirElement.isExtensionFunctionAnnotationCall: Boolean get() = (this as? FirAnnotationCall)?.let {
+    (it.annotationTypeRef as? FirResolvedTypeRef)?.let {
+        (it.type as? ConeClassLikeType)?.let {
+            it.lookupTag.classId.asString() == "kotlin/ExtensionFunctionType"
+        }
+    }
+} == true