diff --git a/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardCompare.java b/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardCompare.java
index 02e8b1e0ac1..22284abac94 100644
--- a/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardCompare.java
+++ b/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardCompare.java
@@ -43,6 +43,7 @@
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.forms.editor.FormEditor;
 import org.eclipse.ui.texteditor.ITextEditor;
 
 public class ClipboardCompare extends BaseCompareAction implements IObjectActionDelegate {
@@ -88,6 +89,9 @@ private void processComparison(IFile file, Shell parentShell) throws IOException
 			return;
 		}
 		final String selectionContents;
+		if (editor instanceof FormEditor fromEditor) {
+			editor = fromEditor.getActiveEditor();
+		}
 		if (editor instanceof ITextEditor txtEditor) {
 			ISelection selection = txtEditor.getSelectionProvider().getSelection();
 			if (selection instanceof ITextSelection textSelection) {
diff --git a/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardReplace.java b/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardReplace.java
index 638547796a4..065fb97d38a 100644
--- a/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardReplace.java
+++ b/team/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ClipboardReplace.java
@@ -31,6 +31,7 @@
 import org.eclipse.ui.IFileEditorInput;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.forms.editor.FormEditor;
 import org.eclipse.ui.texteditor.ITextEditor;
 
 public class ClipboardReplace extends BaseCompareAction {
@@ -42,6 +43,9 @@ protected void run(ISelection selection) {
 			try {
 				IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
 				IEditorPart editor = page.getActiveEditor();
+				if (editor instanceof FormEditor fromEditor) {
+					editor = fromEditor.getActiveEditor();
+				}
 				IEditorInput input = editor.getEditorInput();
 				if (input instanceof IFileEditorInput ed) {
 					IFile file2 = ed.getFile();