diff --git a/baybe/insights/shap.py b/baybe/insights/shap.py
index 63b30987a..469340344 100644
--- a/baybe/insights/shap.py
+++ b/baybe/insights/shap.py
@@ -325,7 +325,7 @@ def plot(
         /,
         *,
         show: bool = True,
-        explanation_idx: int | None = None,
+        explanation_index: int | None = None,
         **kwargs: Any,
     ) -> plt.Axes:
         """Plot the Shapley values using the provided plot type.
@@ -334,7 +334,7 @@ def plot(
             plot_type: The type of plot to be created.
             data: See :meth:`explain`.
             show: Boolean flag determining if the plot is to be rendered.
-            explanation_idx: Positional index of the data point that should be
+            explanation_index: Positional index of the data point that should be
                 explained. Only relevant for plot types that can only handle a single
                 data point.
             **kwargs: Additional keyword arguments passed to the plot function.
@@ -360,15 +360,15 @@ def plot(
         plot_func = getattr(shap.plots, plot_type)
 
         # Handle plot types that only explain a single data point
-        if plot_type in {"force"}:
-            if explanation_idx is None:
+        if plot_type == "force":
+            if explanation_index is None:
                 warnings.warn(
-                    f"When using plot type  '{plot_type}', a 'explanation_idx' must be "
-                    f"chosen to identify a single data point that should be explained. "
-                    f"Choosing the first measurement at position 0."
+                    f"When using plot type '{plot_type}', an 'explanation_index' must "
+                    f"be chosen to identify a single data point that should be "
+                    f"explained. Choosing the first entry at position 0."
                 )
-                explanation_idx = 0
-            toplot = self.explain(data.iloc[[explanation_idx]])
+                explanation_index = 0
+            toplot = self.explain(data.iloc[[explanation_index]])
             kwargs["matplotlib"] = True
         else:
             toplot = self.explain(data)