diff --git a/vignettes/QualityControlAndSampleSizeEstimation.Rmd b/vignettes/QualityControlAndSampleSizeEstimation.Rmd
index aa0a5b30b..38eb16098 100644
--- a/vignettes/QualityControlAndSampleSizeEstimation.Rmd
+++ b/vignettes/QualityControlAndSampleSizeEstimation.Rmd
@@ -32,7 +32,7 @@ Generate Simulated data. To learn how to create prolfqua LFQData objects see the
 
 ```{r filterdata}
 simdata <- prolfqua::sim_lfq_data_peptide_config()
-lfqdata <- LFQData$new(simdata$data,simdata$config)
+lfqdata <- prolfqua::LFQData$new(simdata$data,simdata$config)
 
 lfqdata$remove_small_intensities()