diff --git a/diktat-rules/src/main/kotlin/com/saveourtool/diktat/ruleset/rules/chapter3/PreviewAnnotationRule.kt b/diktat-rules/src/main/kotlin/com/saveourtool/diktat/ruleset/rules/chapter3/PreviewAnnotationRule.kt
index 6334048f1c..fb0486fbe2 100644
--- a/diktat-rules/src/main/kotlin/com/saveourtool/diktat/ruleset/rules/chapter3/PreviewAnnotationRule.kt
+++ b/diktat-rules/src/main/kotlin/com/saveourtool/diktat/ruleset/rules/chapter3/PreviewAnnotationRule.kt
@@ -43,6 +43,7 @@ class PreviewAnnotationRule(configRules: List<RulesConfig>) : DiktatRule(
         }
     }
 
+    @Suppress("TOO_LONG_FUNCTION")
     private fun doCheck(functionNode: ASTNode, modeList: ASTNode) {
         if (modeList.getAllChildrenWithType(ANNOTATION_ENTRY).isEmpty()) {
             return