diff --git a/bundles/org.openhab.voice.googletts/src/main/java/org/openhab/voice/googletts/internal/GoogleCloudAPI.java b/bundles/org.openhab.voice.googletts/src/main/java/org/openhab/voice/googletts/internal/GoogleCloudAPI.java
index 7fc039187e7bc..0a5ef5983e8fb 100644
--- a/bundles/org.openhab.voice.googletts/src/main/java/org/openhab/voice/googletts/internal/GoogleCloudAPI.java
+++ b/bundles/org.openhab.voice.googletts/src/main/java/org/openhab/voice/googletts/internal/GoogleCloudAPI.java
@@ -328,14 +328,16 @@ public byte[] synthesizeSpeech(String text, GoogleTTSVoice voice, String codec)
         String format = getFormatForCodec(codec);
         try {
             return synthesizeSpeechByGoogle(text, voice, format);
-        } catch (AuthenticationException | CommunicationException e) {
-            logger.warn("Error initializing Google Cloud TTS service: {}", e.getMessage());
+        } catch (AuthenticationException e) {
+            logger.warn("Error authenticating Google Cloud TTS service: {}", e.getMessage());
             if (oAuthService != null) {
                 oAuthFactory.ungetOAuthService(GoogleTTSService.SERVICE_PID);
                 oAuthService = null;
             }
-            voices.clear();
+        } catch (CommunicationException e) {
+            logger.warn("Error initializing Google Cloud TTS service: {}", e.getMessage());
         }
+        voices.clear();
         return null;
     }