diff --git a/src/tools/trackeditor/gui/properties/GraphicObjectProperties.java b/src/tools/trackeditor/gui/properties/GraphicObjectProperties.java
index c6d617824..2b34e0b85 100644
--- a/src/tools/trackeditor/gui/properties/GraphicObjectProperties.java
+++ b/src/tools/trackeditor/gui/properties/GraphicObjectProperties.java
@@ -593,7 +593,7 @@ public class GraphicObjectProperties extends PropertyPanel
 					graphicObjects.lastElement().setHeight(datum.height);
 				}
 
-				if (datum.useMaterial != null && !datum.useMaterial.isBlank())
+				if (datum.useMaterial != null && !datum.useMaterial.trim().isEmpty())
 				{
 					graphicObjects.lastElement().setUseMaterial(datum.useMaterial);
 				}
diff --git a/src/tools/trackeditor/utils/ac3d/Ac3d.java b/src/tools/trackeditor/utils/ac3d/Ac3d.java
index a4fcc4773..96c9dda9d 100644
--- a/src/tools/trackeditor/utils/ac3d/Ac3d.java
+++ b/src/tools/trackeditor/utils/ac3d/Ac3d.java
@@ -300,7 +300,7 @@ public class Ac3d
 				{
 					while (readLine())
 					{
-						if (tokens.length == 0 || (tokens.length == 1 && tokens[0].isBlank()))
+						if (tokens.length == 0 || (tokens.length == 1 && tokens[0].trim().isEmpty()))
 						{
 							continue;
 						}