diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index 84d93c1c40b..1edbb17887a 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -119,6 +119,11 @@
 		<module name="OuterTypeNumber"/>
 
 		<module name="SuppressWarningsHolder"/>
+
+		<module name="IllegalType"/>
+		<module name="IllegalImport">
+			<property name="illegalClasses" value="jadx.core.utils.DebugUtils"/>
+		</module>
 	</module>
 
 	<module name="NewlineAtEndOfFile"/>
diff --git a/jadx-core/src/main/java/jadx/core/utils/DebugUtils.java b/jadx-core/src/main/java/jadx/core/utils/DebugUtils.java
index cbe7e34eedd..1395865ee08 100644
--- a/jadx-core/src/main/java/jadx/core/utils/DebugUtils.java
+++ b/jadx-core/src/main/java/jadx/core/utils/DebugUtils.java
@@ -13,7 +13,6 @@
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import org.jetbrains.annotations.TestOnly;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,8 +38,10 @@
 import jadx.core.utils.exceptions.CodegenException;
 import jadx.core.utils.exceptions.JadxException;
 
-@Deprecated
-@TestOnly
+/**
+ * Use these methods only for debug purpose.
+ * CheckStyle will reject usage of this class.
+ */
 public class DebugUtils {
 	private static final Logger LOG = LoggerFactory.getLogger(DebugUtils.class);