diff --git a/tests/testthat/test-SeriesAggreg.R b/tests/testthat/test-SeriesAggreg.R
index b65428c241067c26eca8557d376aa9025610945f..f54edc9cf49a4d2ba1a2a326a210b3493d874610 100644
--- a/tests/testthat/test-SeriesAggreg.R
+++ b/tests/testthat/test-SeriesAggreg.R
@@ -182,24 +182,22 @@ test_that("Check SeriesAggreg.outputsModel", {
 })
 
 test_that("Check data.frame handling in SeriesAggreg.list", {
-  QObsUp <- imputeTS::na_interpolation(BasinObs$Qmm)
   InputsModelDown1 <- CreateInputsModel(
     FUN_MOD = RunModel_GR4J,
     DatesR = BasinObs$DatesR,
     Precip = BasinObs$P,
     PotEvap = BasinObs$E,
-    Qupstream = matrix(QObsUp, ncol = 1),
+    Qupstream = matrix(BasinObs$Qmm, ncol = 1),
     # Upstream observed flow
-    LengthHydro = 100 * 1000,
-    # Distance between upstream catchment outlet and the downstream one in m
+    LengthHydro = 100,
+    # Distance between upstream catchment outlet and the downstream one in km
     BasinAreas = c(180, 180) # Upstream and downstream areas in km²
   )
   expect_warning(SeriesAggreg(InputsModelDown1, "%Y%m"),
                  regexp = NA)
   I2 <- SeriesAggreg(InputsModelDown1, "%Y%m")
   expect_equal(length(I2$DatesR), nrow(I2$Qupstream))
-  InputsModelDown1$Qupstream <-
-    InputsModelDown1$Qupstream[-1, , drop = FALSE] # https://stackoverflow.com/a/7352287/5300212
+  InputsModelDown1$Qupstream <- InputsModelDown1$Qupstream[-1, , drop = FALSE]
   expect_warning(SeriesAggreg(InputsModelDown1, "%Y%m"),
                  regexp = "it will be ignored in the aggregation")
 })