diff --git a/lib/Service/OpenAiAPIService.php b/lib/Service/OpenAiAPIService.php
index 9c643869..64f21866 100644
--- a/lib/Service/OpenAiAPIService.php
+++ b/lib/Service/OpenAiAPIService.php
@@ -953,7 +953,7 @@ public function getExpTextProcessingTime(): int {
 	 * @return void
 	 */
 	public function updateExpTextProcessingTime(int $runtime): void {
-		$oldTime = floatval($this->getExpImgProcessingTime());
+		$oldTime = floatval($this->getExpTextProcessingTime());
 		$newTime = (1.0 - Application::EXPECTED_RUNTIME_LOWPASS_FACTOR) * $oldTime + Application::EXPECTED_RUNTIME_LOWPASS_FACTOR * floatval($runtime);
 
 		if ($this->isUsingOpenAi()) {