diff --git a/ex-1/bootstrap.c b/ex-1/bootstrap.c
index 7d380f8..e033941 100644
--- a/ex-1/bootstrap.c
+++ b/ex-1/bootstrap.c
@@ -140,6 +140,7 @@ uncert bootstrap_median(
   median.s = gsl_stats_sd(values, 1, boots);
 
   // free memory
+  gsl_rstat_free(w);
   free(values);
 
   return median;