diff --git a/src/common/entity/compute_state_display.ts b/src/common/entity/compute_state_display.ts
index 8410c284e7..6d5e36d5c2 100644
--- a/src/common/entity/compute_state_display.ts
+++ b/src/common/entity/compute_state_display.ts
@@ -79,7 +79,8 @@ export const computeStateDisplayFromEntityAttributes = (
     if (
       attributes.device_class === "duration" &&
       attributes.unit_of_measurement &&
-      UNIT_TO_MILLISECOND_CONVERT[attributes.unit_of_measurement]
+      UNIT_TO_MILLISECOND_CONVERT[attributes.unit_of_measurement] &&
+      entity?.display_precision === undefined
     ) {
       try {
         return formatDuration(state, attributes.unit_of_measurement);