diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/refactoring/includes/GCCHeaderSubstitutionMaps.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/refactoring/includes/GCCHeaderSubstitutionMaps.java
index a29f62484b9..d4589e60c90 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/refactoring/includes/GCCHeaderSubstitutionMaps.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/refactoring/includes/GCCHeaderSubstitutionMaps.java
@@ -300,8 +300,8 @@ public class GCCHeaderSubstitutionMaps {
 			"<bits/hashtable.h>", "<unordered_map>",
 			"<bits/hashtable.h>", "<unordered_set>",
 			"<bits/indirect_array.h>", "<valarray>",
-			"<bits/ios_base.h>", "<iostream>",
 			"<bits/ios_base.h>", "<ios>",
+			"<bits/ios_base.h>", "<iostream>",
 			"<bits/ios_base.h>", "<iomanip>",
 			"<bits/istream.tcc>", "<istream>",
 			"<bits/list.tcc>", "<list>",