diff --git a/prepare/ide-plugin-dependencies/kotlin-compiler-testdata-for-ide/build.gradle.kts b/prepare/ide-plugin-dependencies/kotlin-compiler-testdata-for-ide/build.gradle.kts
index 53d980626bd..d0a9860fa2a 100644
--- a/prepare/ide-plugin-dependencies/kotlin-compiler-testdata-for-ide/build.gradle.kts
+++ b/prepare/ide-plugin-dependencies/kotlin-compiler-testdata-for-ide/build.gradle.kts
@@ -16,6 +16,7 @@ idePluginDependency {
             "compiler/fir/analysis-tests/testData/resolve",
             "compiler/fir/analysis-tests/testData/resolveWithStdlib",
             "compiler/testData/diagnostics/tests",
+            "compiler/testData/diagnostics/helpers",
             "compiler/testData/diagnostics/testsWithStdLib"
         ).forEach {
             from(rootDir.resolve(it)) {