diff --git a/R/stat-boxplot.R b/R/stat-boxplot.R
index ff51b8354d..4c657023f3 100644
--- a/R/stat-boxplot.R
+++ b/R/stat-boxplot.R
@@ -25,8 +25,8 @@ StatBoxplot <- ggproto("StatBoxplot", Stat,
                                           group_has_equal = TRUE,
                                           main_is_optional = TRUE,
                                         default = NA)
-    
-    if (is.na(params$flipped_aes)) {
+
+    if (is.na(params$flipped_aes) && any(c("x", "y") %in% names(data))) {
       cli::cli_warn("Orientation is not uniquely specified when both the x and y aesthetics are continuous. Picking default orientation 'x'.")
       params$flipped_aes <- FALSE
     }
diff --git a/man/resolution.Rd b/man/resolution.Rd
index 0207545570..580a13ca60 100644
--- a/man/resolution.Rd
+++ b/man/resolution.Rd
@@ -19,7 +19,8 @@ having a resolution of 1?}
 The resolution is the smallest non-zero distance between adjacent
 values.  If there is only one unique value, then the resolution is defined
 to be one. If x is an integer vector, then it is assumed to represent a
-discrete variable, and the resolution is 1.
+discrete variable, and the resolution is 1. If the differences are all smaller
+than the tolerance, set resolution to 1.
 }
 \examples{
 resolution(1:10)