diff --git a/packages/rtl-objpas/src/inc/rtti.pp b/packages/rtl-objpas/src/inc/rtti.pp
index f1d043ba6c..a325eed278 100644
--- a/packages/rtl-objpas/src/inc/rtti.pp
+++ b/packages/rtl-objpas/src/inc/rtti.pp
@@ -2050,7 +2050,7 @@ begin
       otUQWord: Result := FData.FAsUInt64;
     end
   else if (Kind = tkFloat) and (TypeData^.FloatType = ftComp) then
-    Result := FData.FAsComp
+    Result := QWord(FData.FAsComp)
   else
     raise EInvalidCast.Create(SErrInvalidTypecast);
 end;
@@ -2069,7 +2069,7 @@ begin
       otUQWord: Result := FData.FAsUInt64;
     end
   else if (Kind = tkFloat) and (TypeData^.FloatType = ftComp) then
-    Result := FData.FAsComp
+    Result := Int64(FData.FAsComp)
   else
     raise EInvalidCast.Create(SErrInvalidTypecast);
 end;