diff --git a/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/AddSubTransformer.kt b/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/AddSubTransformer.kt
index c3ff319301..62a0cb96b5 100644
--- a/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/AddSubTransformer.kt
+++ b/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/AddSubTransformer.kt
@@ -6,7 +6,7 @@ import com.github.javaparser.ast.expr.BinaryExpr
 import com.github.javaparser.ast.expr.Expression
 import com.github.javaparser.ast.expr.UnaryExpr
 import dev.openrs2.deob.ast.util.ExprUtils
-import dev.openrs2.deob.ast.util.TypeUtils
+import dev.openrs2.deob.ast.util.isString
 import dev.openrs2.deob.ast.util.walk
 
 class AddSubTransformer : Transformer() {
@@ -17,7 +17,7 @@ class AddSubTransformer : Transformer() {
             val right = expr.right
             val type = expr.calculateResolvedType()
 
-            if (op == BinaryExpr.Operator.PLUS && TypeUtils.isString(type)) {
+            if (op == BinaryExpr.Operator.PLUS && type.isString()) {
                 return@walk
             }
 
diff --git a/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/BinaryExprOrderTransformer.kt b/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/BinaryExprOrderTransformer.kt
index 8cfada6788..f6ea3b783c 100644
--- a/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/BinaryExprOrderTransformer.kt
+++ b/deob-ast/src/main/java/dev/openrs2/deob/ast/transform/BinaryExprOrderTransformer.kt
@@ -3,7 +3,7 @@ package dev.openrs2.deob.ast.transform
 import com.github.javaparser.ast.CompilationUnit
 import com.github.javaparser.ast.Node
 import com.github.javaparser.ast.expr.BinaryExpr
-import dev.openrs2.deob.ast.util.TypeUtils
+import dev.openrs2.deob.ast.util.isString
 import dev.openrs2.deob.ast.util.walk
 
 class BinaryExprOrderTransformer : Transformer() {
@@ -12,7 +12,7 @@ class BinaryExprOrderTransformer : Transformer() {
             val op = flip(expr.operator) ?: return@walk
 
             val type = expr.calculateResolvedType()
-            if (op == BinaryExpr.Operator.PLUS && TypeUtils.isString(type)) {
+            if (op == BinaryExpr.Operator.PLUS && type.isString()) {
                 return@walk
             }
 
diff --git a/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.java b/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.java
deleted file mode 100644
index 9ecb47e76e..0000000000
--- a/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package dev.openrs2.deob.ast.util;
-
-import com.github.javaparser.resolution.types.ResolvedType;
-
-public final class TypeUtils {
-	public static boolean isString(ResolvedType type) {
-		return type.isReferenceType() && type.asReferenceType().getQualifiedName().equals("java.lang.String");
-	}
-
-	private TypeUtils() {
-		/* empty */
-	}
-}
diff --git a/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.kt b/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.kt
new file mode 100644
index 0000000000..4e8f8814b3
--- /dev/null
+++ b/deob-ast/src/main/java/dev/openrs2/deob/ast/util/TypeUtils.kt
@@ -0,0 +1,7 @@
+package dev.openrs2.deob.ast.util
+
+import com.github.javaparser.resolution.types.ResolvedType
+
+fun ResolvedType.isString(): Boolean {
+    return isReferenceType && asReferenceType().qualifiedName == "java.lang.String"
+}