diff --git a/web/utils/tooltip-action-utils.js b/web/utils/tooltip-action-utils.js
--- a/web/utils/tooltip-action-utils.js
+++ b/web/utils/tooltip-action-utils.js
@@ -22,7 +22,7 @@
 import {
   type MessageTooltipAction,
   getTooltipPositionStyle,
-  calculateTooltipSize,
+  calculateMessageTooltipSize,
   type TooltipPosition,
   type TooltipPositionStyle,
   type TooltipSize,
@@ -416,7 +416,7 @@
       };
     }
     const tooltipLabels = tooltipActions.map(action => action.label);
-    return calculateTooltipSize({
+    return calculateMessageTooltipSize({
       tooltipLabels,
       timestamp: messageTimestamp,
     });
diff --git a/web/utils/tooltip-utils.js b/web/utils/tooltip-utils.js
--- a/web/utils/tooltip-utils.js
+++ b/web/utils/tooltip-utils.js
@@ -318,18 +318,15 @@
   return tooltipPositionStyle;
 }
 
-type CalculateTooltipSizeArgs = {
+type CalculateMessageTooltipSizeArgs = {
   +tooltipLabels: $ReadOnlyArray<string>,
   +timestamp: string,
 };
 
-function calculateTooltipSize({
+function calculateMessageTooltipSize({
   tooltipLabels,
   timestamp,
-}: CalculateTooltipSizeArgs): {
-  +width: number,
-  +height: number,
-} {
+}: CalculateMessageTooltipSizeArgs): TooltipSize {
   const textWidth =
     calculateMaxTextWidth([...tooltipLabels, timestamp], 14) +
     2 * tooltipLabelStyle.padding;
@@ -352,4 +349,8 @@
   };
 }
 
-export { findTooltipPosition, getTooltipPositionStyle, calculateTooltipSize };
+export {
+  findTooltipPosition,
+  getTooltipPositionStyle,
+  calculateMessageTooltipSize,
+};