diff --git a/resources/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java b/resources/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
index 441d329483c..8afae69a21e 100644
--- a/resources/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
+++ b/resources/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2015 IBM Corporation and others.
+ * Copyright (c) 2000, 2026 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -34,7 +34,6 @@
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
-import org.eclipse.core.runtime.Preferences;
 import org.eclipse.osgi.util.NLS;
 
 public class WorkspaceRoot extends Container implements IWorkspaceRoot {
@@ -123,8 +122,9 @@ public String getDefaultCharset(boolean checkImplicit) {
 		if (checkImplicit) {
 			return ResourcesPlugin.getEncoding();
 		}
-		String enc = ResourcesPlugin.getPlugin().getPluginPreferences().getString(ResourcesPlugin.PREF_ENCODING);
-		return enc == null || enc.length() == 0 ? null : enc;
+		String enc = Platform.getPreferencesService().getString(ResourcesPlugin.PI_RESOURCES,
+				ResourcesPlugin.PREF_ENCODING, "", null); //$NON-NLS-1$
+		return enc.isEmpty() ? null : enc;
 	}
 
 	@Override
@@ -284,18 +284,6 @@ public boolean isPhantom() {
 		return false;
 	}
 
-	@Deprecated
-	@Override
-	public void setDefaultCharset(String charset) {
-		// directly change the Resource plugin's preference for encoding
-		Preferences resourcesPreferences = ResourcesPlugin.getPlugin().getPluginPreferences();
-		if (charset != null) {
-			resourcesPreferences.setValue(ResourcesPlugin.PREF_ENCODING, charset);
-		} else {
-			resourcesPreferences.setToDefault(ResourcesPlugin.PREF_ENCODING);
-		}
-	}
-
 	@Override
 	public void setHidden(boolean isHidden) {
 		//workspace root cannot be set hidden