diff --git a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/NullChecksRule.kt b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/NullChecksRule.kt
index c42163bf7e..85c0c7dcfd 100644
--- a/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/NullChecksRule.kt
+++ b/diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/NullChecksRule.kt
@@ -161,14 +161,14 @@ class NullChecksRule(private val configRules: List<RulesConfig>) : Rule("null-ch
     }
 
     private fun ASTNode.extractLinesFromBlock(type: IElementType): List<String>? =
-            treeParent
-            .getFirstChildWithType(type)
-            ?.text
-            ?.trim('{', '}')
-            ?.split("\n")
-            ?.filter { it.isNotBlank() }
-            ?.map { it.trim() }
-            ?.toList()
+                treeParent
+                .getFirstChildWithType(type)
+                ?.text
+                ?.trim('{', '}')
+                ?.split("\n")
+                ?.filter { it.isNotBlank() }
+                ?.map { it.trim() }
+                ?.toList()
 
     @Suppress("UnsafeCallOnNullableType")
     private fun isNullCheckBinaryExpression(condition: KtBinaryExpression): Boolean =