diff --git a/Kha/Backends/Kinc-HL/kha/graphics4/FragmentShader.hx b/Kha/Backends/Kinc-HL/kha/graphics4/FragmentShader.hx
index 48c23cb..8cffb85 100644
--- a/Kha/Backends/Kinc-HL/kha/graphics4/FragmentShader.hx
+++ b/Kha/Backends/Kinc-HL/kha/graphics4/FragmentShader.hx
@@ -1,5 +1,5 @@
 package kha.graphics4;
-
+using StringTools;
 import kha.Blob;
 
 class FragmentShader {