diff --git a/reactos/tools/widl/parser.tab.c b/reactos/tools/widl/parser.tab.c
index f13f6cc8114..6f5c3032e94 100644
--- a/reactos/tools/widl/parser.tab.c
+++ b/reactos/tools/widl/parser.tab.c
@@ -3635,7 +3635,7 @@ yyreduce:
 
   case 222:
 #line 822 "parser.y"
-    { (yyval.type) = duptype(find_type("float", 0), 1); ;}
+    { (yyval.type) = find_type("float", 0); ;}
     break;
 
   case 223:
@@ -4065,7 +4065,7 @@ yyreduce:
 
   case 295:
 #line 1072 "parser.y"
-    { (yyval.type) = duptype(find_type_or_error("void", 0), 1); ;}
+    { (yyval.type) = find_type_or_error("void", 0); ;}
     break;
 
   case 296:
@@ -5076,7 +5076,7 @@ static type_t *make_class(char *name)
 
 static type_t *make_safearray(type_t *type)
 {
-  type_t *sa = duptype(find_type_or_error("SAFEARRAY", 0), 1);
+  type_t *sa = find_type_or_error("SAFEARRAY", 0);
   sa->ref = type;
   return make_type(pointer_default, sa);
 }
diff --git a/reactos/tools/widl/parser.y b/reactos/tools/widl/parser.y
index 2165eecfe9e..d044c07c5f4 100644
--- a/reactos/tools/widl/parser.y
+++ b/reactos/tools/widl/parser.y
@@ -819,7 +819,7 @@ base_type: tBYTE				{ $$ = make_builtin($<str>1); }
 						}
 	| tUNSIGNED				{ $$ = make_int(-1); }
 	| tFLOAT				{ $$ = make_builtin($<str>1); }
-	| tSINGLE				{ $$ = duptype(find_type("float", 0), 1); }
+	| tSINGLE				{ $$ = find_type("float", 0); }
 	| tDOUBLE				{ $$ = make_builtin($<str>1); }
 	| tBOOLEAN				{ $$ = make_builtin($<str>1); }
 	| tERRORSTATUST				{ $$ = make_builtin($<str>1); }
@@ -1069,7 +1069,7 @@ structdef: tSTRUCT t_ident '{' fields '}'	{ $$ = get_typev(RPC_FC_STRUCT, $2, ts
                                                 }
 	;
 
-type:	  tVOID					{ $$ = duptype(find_type_or_error("void", 0), 1); }
+type:	  tVOID					{ $$ = find_type_or_error("void", 0); }
 	| aKNOWNTYPE				{ $$ = find_type_or_error($1, 0); }
 	| base_type				{ $$ = $1; }
 	| enumdef				{ $$ = $1; }
@@ -1761,7 +1761,7 @@ static type_t *make_class(char *name)
 
 static type_t *make_safearray(type_t *type)
 {
-  type_t *sa = duptype(find_type_or_error("SAFEARRAY", 0), 1);
+  type_t *sa = find_type_or_error("SAFEARRAY", 0);
   sa->ref = type;
   return make_type(pointer_default, sa);
 }