diff --git a/gateway/platforms/base.py b/gateway/platforms/base.py
index 95fba722245..7e5a93a1d15 100644
--- a/gateway/platforms/base.py
+++ b/gateway/platforms/base.py
@@ -4197,6 +4197,15 @@ class BasePlatformAdapter(ABC):
         for match in media_pattern.finditer(scan_content):
             path = _normalize_media_tag_path(match.group("path"))
             if path:
+                # ``[[audio_as_voice]]`` is message-global, but it must only
+                # affect audio files. Tagging a non-audio file (image, video,
+                # document) as is_voice taints it: an image flagged is_voice is
+                # excluded from the embedded-photo batch and falls through to
+                # send_document, arriving as a file attachment instead of an
+                # inline photo. Gating on the extension lets one message carry
+                # an embedded image AND a voice bubble together.
+                ext = os.path.splitext(path)[1].lower()
+                is_voice = has_voice_tag and ext in _AUDIO_EXTS
                 try:
                     expanded = os.path.expanduser(path)
                 except (OSError, RuntimeError, ValueError):
@@ -4205,7 +4214,7 @@ class BasePlatformAdapter(ABC):
                     continue
                 if expanded not in seen_paths:
                     seen_paths.add(expanded)
-                    media.append((expanded, has_voice_tag))
+                    media.append((expanded, is_voice))
 
         for match in MEDIA_EXTENSIONLESS_TAG_RE.finditer(scan_content):
             path = _normalize_media_tag_path(match.group("path"))
@@ -4216,7 +4225,8 @@ class BasePlatformAdapter(ABC):
                 continue
             safe = resolved[0]
             if safe not in seen_paths:
-                media.append((safe, has_voice_tag))
+                _safe_ext = os.path.splitext(safe)[1].lower()
+                media.append((safe, has_voice_tag and _safe_ext in _AUDIO_EXTS))
                 seen_paths.add(safe)
 
         # Remove the delivered MEDIA tags from the user-visible text. Mask a