R script dataset has wrong codepage

Hello,

I am creating new dataset "languages" with R script, loading data from SAV file

library(foreign)

languages <- read.spss("C:\\data.sav", to.data.frame = TRUE, use.value.labels = TRUE)

If I execute it in R-studio I receive data with correct characters, but in POWER BI desktop is everything crippled, I used also optional parameter reencode to choose different codepage but nothing has changed in POWER BI desktop

Thanks for help