diff --git a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService.java b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService.java
index b793d6d57..4ff22c34f 100644
--- a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService.java
+++ b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService.java
@@ -54,7 +54,7 @@ public class XtextTransientValueService extends DefaultTransientValueService {
 				}
 			} else if (rule instanceof TerminalRule) {
 				final TypeRef returnType = rule.getType();
-				return returnType == null || EcorePackage.eINSTANCE.getEString().equals(rule.getType().getClassifier());
+				return ((TerminalRule) rule).isFragment() || returnType == null || EcorePackage.eINSTANCE.getEString().equals(rule.getType().getClassifier());
 			}
 		}
 		else if (feature == XtextPackage.eINSTANCE.getCrossReference_Terminal()) {
diff --git a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService2.java b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService2.java
index 6c4e36b91..5189b48b7 100644
--- a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService2.java
+++ b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/xtext/XtextTransientValueService2.java
@@ -60,6 +60,11 @@ public class XtextTransientValueService2 extends TransientValueService {
 				final TypeRef returnType = rule.getType();
 				if (returnType == null)
 					return YES;
+				if (rule instanceof TerminalRule) {
+					if (((TerminalRule) rule).isFragment()) {
+						return YES;
+					}
+				}
 				if (EcorePackage.eINSTANCE.getEString().equals(rule.getType().getClassifier()))
 					return PREFERABLY;
 				return NO;