diff --git a/src/com/android/mail/providers/Attachment.java b/src/com/android/mail/providers/Attachment.java
index 4ed33f8..7f56d1d 100644
--- a/src/com/android/mail/providers/Attachment.java
+++ b/src/com/android/mail/providers/Attachment.java
@@ -256,6 +256,11 @@
                 name = MimeUtility.getHeaderParameter(contentDisposition, "filename");
             }
 
+            // Prevent passing in a file path as part of the name.
+            if (name != null) {
+                name = name.replace('/', '_');
+            }
+
             contentType = MimeType.inferMimeType(name, part.getMimeType());
             uri = EmlAttachmentProvider.getAttachmentUri(emlFileUri, messageId, cid);
             contentUri = uri;