diff --git a/src/russian/MorphoRus.gf b/src/russian/MorphoRus.gf
index 6241a319..03cb0762 100644
--- a/src/russian/MorphoRus.gf
+++ b/src/russian/MorphoRus.gf
@@ -59,7 +59,7 @@ oper pronYaTu : { s : Case => Str } -> Str -> Person -> Gender -> Pronoun =
         <Gen,      GPl> => mo + "их" ;
         <Dat,      GPl> => mo + "им" ;
         <Acc,      GPl> => mo + "их" ;
-        <Inst,     GPl> => mo + "им" ;
+        <Inst,     GPl> => mo + "ими" ;
         <Prepos _, GPl> => mo + "их" 
 	
       }
diff --git a/src/russian/NumeralRus.gf b/src/russian/NumeralRus.gf
index 4ca5977d..298098c4 100644
--- a/src/russian/NumeralRus.gf
+++ b/src/russian/NumeralRus.gf
@@ -193,7 +193,7 @@ lin n2  =
 		  <(Nom|Acc), _  >     => "двести";
 		  <Gen, _        >     => "двухсот";
 		  <Dat, _        >     => "двумстам";
-		  <Inst, _       >     => "двумяюстами";
+		  <Inst, _       >     => "двумястами";
 		  <Prepos _, _   >     => "двухстах"} } ;
    size = sgg} ;