diff --git a/plugins/fir/fir-plugin-prototype/tests/org/jetbrains/kotlin/fir/plugin/AbstractFirAllOpenDiagnosticTest.kt b/plugins/fir/fir-plugin-prototype/tests/org/jetbrains/kotlin/fir/plugin/AbstractFirAllOpenDiagnosticTest.kt
index ffb451b47d8..ff51c234d32 100644
--- a/plugins/fir/fir-plugin-prototype/tests/org/jetbrains/kotlin/fir/plugin/AbstractFirAllOpenDiagnosticTest.kt
+++ b/plugins/fir/fir-plugin-prototype/tests/org/jetbrains/kotlin/fir/plugin/AbstractFirAllOpenDiagnosticTest.kt
@@ -19,6 +19,10 @@ abstract class AbstractFirAllOpenDiagnosticTest : AbstractFirDiagnosticsTest() {
 
     override fun performCustomConfiguration(configuration: CompilerConfiguration) {
         super.performCustomConfiguration(configuration)
-        configuration.addJvmClasspathRoot(File("plugins/fir/fir-plugin-prototype/plugin-annotations/build/libs/plugin-annotations-1.4.255-SNAPSHOT.jar"))
+        val jar = File("plugins/fir/fir-plugin-prototype/plugin-annotations/build/libs/plugin-annotations-1.4.255-SNAPSHOT.jar")
+        if (!jar.exists()) {
+            throw AssertionError("Jar with annotations does not exist. Please run :plugins:fir:fir-plugin-prototype:plugin-annotations:jar")
+        }
+        configuration.addJvmClasspathRoot(jar)
     }
 }
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