diff --git a/src/hungarian/StructuralHun.gf b/src/hungarian/StructuralHun.gf
index 1630121b3..20d11a6ea 100644
--- a/src/hungarian/StructuralHun.gf
+++ b/src/hungarian/StructuralHun.gf
@@ -103,11 +103,11 @@ lin by8agent_Prep = mkPrep "által" ;
 lin by8means_Prep = casePrep Ins ;
 -- lin during_Prep = mkPrep ;
 -- lin except_Prep = mkPrep ;
--- lin for_Prep = mkPrep "" ;
+lin for_Prep = casePrep Dat ;
 -- lin from_Prep = mkPrep "" ;
 -- lin in8front_Prep = mkPrep "" ;
 lin in_Prep = casePrep Ine ;
-lin on_Prep = casePrep Ade ;
+lin on_Prep = casePrep Sup ;
 -- lin part_Prep = casePrep  ;
 -- lin possess_Prep = -- Suffix attaches to possessee, not possessor
 -- lin through_Prep = mkPrep ;