When trying to upload a .bmp file, mime validation fails in upload UI

[INFO] [talledLocalContainer] 25.02.2016 23:47:29 WARN  http-nio-8080-exec-9 [AjaxFileUploadBehavior.setResponse:156] file hippo.bmp contains errors: The file 'hippo.bmp' content does not match with the given MIME type: image/x-ms-bmp

$ identify -verbose hippo.bmp 
Image: hippo.bmp
  Format: BMP (Microsoft Windows bitmap image)
  Class: DirectClass
  Geometry: 1763x1080+0+0
  Resolution: 0.01x0.01
  Print size: 176300x108000
  Units: PixelsPerCentimeter
  Type: TrueColor
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
  Channel statistics:
    Pixels: 1904040
    Red:
      min: 0 (0)
      max: 255 (1)
      mean: 122.999 (0.482347)
      standard deviation: 35.9398 (0.14094)
      kurtosis: 1.78174
      skewness: -1.11897
      entropy: 0.851629
    Green:
      min: 0 (0)
      max: 255 (1)
      mean: 140.395 (0.550569)
      standard deviation: 40.5896 (0.159175)
      kurtosis: 2.99303
      skewness: -1.7844
      entropy: 0.84158
    Blue:
      min: 0 (0)
      max: 251 (0.984314)
      mean: 158.263 (0.62064)
      standard deviation: 54.7529 (0.214717)
      kurtosis: 0.745659
      skewness: -1.33707
      entropy: 0.88009
  Image statistics:
    Overall:
      min: 0 (0)
      max: 255 (1)
      mean: 140.552 (0.551185)
      standard deviation: 44.4862 (0.174456)
      kurtosis: 1.62197
      skewness: -1.13626
      entropy: 0.857766
  Rendering intent: Perceptual
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgb(223,223,223)
  Matte color: grey74
  Transparent color: black
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 1763x1080+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Undefined
  Orientation: Undefined
  Properties:
    date:create: 2016-02-23T22:39:06-05:00
    date:modify: 2016-02-23T22:39:00-05:00
    signature: 095979ce900d24d683d6a535cde768e82cf497cbb8c78d29fb8b9591ba49e9dd
  Artifacts:
    filename: hippo.bmp
    verbose: true
  Tainted: False
  Filesize: 5.715MB
  Number pixels: 1.904M
  Pixels per second: 952.03GB
  User time: 0.000u
  Elapsed time: 0:01.000
  Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-07-26 http://www.imagemagick.org