diff --git a/custom_components/grill_buddy/const.py b/custom_components/grill_buddy/const.py
index 8d0fdd9..a2a90ea 100644
--- a/custom_components/grill_buddy/const.py
+++ b/custom_components/grill_buddy/const.py
@@ -2,7 +2,7 @@
 
 from enum import Enum
 
-VERSION = "v2024.5.1"
+VERSION = "v2024.5.2"
 NAME = "Grill Buddy"
 MANUFACTURER = "@jeroenterheerdt"
 
diff --git a/custom_components/grill_buddy/frontend/dist/grill-buddy.js b/custom_components/grill_buddy/frontend/dist/grill-buddy.js
index ddde622..8950279 100644
--- a/custom_components/grill_buddy/frontend/dist/grill-buddy.js
+++ b/custom_components/grill_buddy/frontend/dist/grill-buddy.js
@@ -4303,7 +4303,7 @@
             .narrow=${this.narrow}
           ></ha-menu-button>
           <div class="main-title">${Hr("title", this.hass.language)}</div>
-          <div class="version">${"v2024.5.1"}</div>
+          <div class="version">${"v2024.5.2"}</div>
         </div>
 
         <ha-tabs
diff --git a/custom_components/grill_buddy/frontend/src/const.ts b/custom_components/grill_buddy/frontend/src/const.ts
index 28d700d..5ee789d 100644
--- a/custom_components/grill_buddy/frontend/src/const.ts
+++ b/custom_components/grill_buddy/frontend/src/const.ts
@@ -1,4 +1,4 @@
-export const VERSION = "v2024.5.1";
+export const VERSION = "v2024.5.2";
 export const REPO = "https://github.com/jeroenterheerdt/grill_buddy";
 export const ISSUES_URL = REPO + "/issues";
 
diff --git a/custom_components/grill_buddy/manifest.json b/custom_components/grill_buddy/manifest.json
index 3995271..090fcee 100644
--- a/custom_components/grill_buddy/manifest.json
+++ b/custom_components/grill_buddy/manifest.json
@@ -8,5 +8,5 @@
   "iot_class": "local_push",
   "issue_tracker": "https://github.com/jeroenterheerdt/grill_buddy/issues",
   "requirements": [],
-  "version": "v2024.5.1"
+  "version": "v2024.5.2"
 }
diff --git a/custom_components/grill_buddy/sensor.py b/custom_components/grill_buddy/sensor.py
index 5154180..f5e16c4 100644
--- a/custom_components/grill_buddy/sensor.py
+++ b/custom_components/grill_buddy/sensor.py
@@ -259,7 +259,11 @@ def async_sensor_state_changed(
 
             # add prediction
 
-            if not is_number(old_state) or not is_number(self._temperature):
+            if (
+                not is_number(old_state)
+                or not is_number(self._temperature)
+                or not is_number(target_temperature)
+            ):
                 delta = 0
             else:
                 if not self._system_is_metric: