diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
index d5c1d13ea53..7715e9b7b6b 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
@@ -10731,4 +10731,11 @@ public class AST2CPPTests extends AST2TestBase {
 		ICPPFunction operator = helper.assertNonProblem("operator()");
 		assertEquals(operator, call2.getOverload());
 	}
+
+	//  void f(int &&a);
+	public void testRValueReferenceSignature_427856() throws Exception {
+		IASTTranslationUnit tu = parseAndCheckBindings();
+		IASTSimpleDeclaration sd = (IASTSimpleDeclaration) tu.getDeclarations()[0];
+		isParameterSignatureEqual(sd.getDeclarators()[0], "(int&&)");
+	}
 }
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
index e6e5da5d3f2..ec8fec08071 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
@@ -9,6 +9,7 @@
  *     Anton Leherbauer (Wind River Systems) - initial API and implementation
  *     Markus Schorn (Wind River Systems)
  *     Sergey Prigogin (Google)
+ *     Marc-Andre Laperle (Ericsson)
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.model;
 
@@ -454,7 +455,11 @@ public class ASTStringUtil {
 					buffer.append(' ').append(Keywords.RESTRICT);
 				}
 			} else if (pointerOperator instanceof ICPPASTReferenceOperator) {
-				buffer.append(Keywords.cpAMPER);
+				if (((ICPPASTReferenceOperator) pointerOperator).isRValueReference()) {
+					buffer.append(Keywords.cpAND);
+				} else {
+					buffer.append(Keywords.cpAMPER);
+				}
 			}
 		} 
 		return buffer;