diff --git a/R/revision_analysis.R b/R/revision_analysis.R
index 5b0057a..3f5093d 100644
--- a/R/revision_analysis.R
+++ b/R/revision_analysis.R
@@ -407,7 +407,7 @@ seasonality_test <- function(x) {
 theil_test_evaluator <- function(U1, U2, N, n_test, thr) {
     if (!is.null(U1)) {
         theil_rslt <- round(rbind(N, U1), 3)
-        if (!is.null(U2) && !all(is.nan(U2)) == TRUE) {
+        if (!is.null(U2) && !all(is.nan(U2))) {
             theil_rslt <- rbind(theil_rslt, U2 = round(U2, 3))
             theil_q <- eval_test(U2, threshold = thr$u2, ascending = FALSE)
             U_det <- "U2"
diff --git a/man/figures/logo.png b/man/figures/logo.png
new file mode 100644
index 0000000..7e87053
Binary files /dev/null and b/man/figures/logo.png differ
diff --git a/man/figures/logo.svg b/man/figures/logo.svg
new file mode 100644
index 0000000..3a2a2af
--- /dev/null
+++ b/man/figures/logo.svg
@@ -0,0 +1,160 @@
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