diff --git a/PIL/Image.py b/PIL/Image.py
index 85ffcf976..ea0f08bd9 100644
--- a/PIL/Image.py
+++ b/PIL/Image.py
@@ -250,6 +250,7 @@ _MODE_CONV = {
     "CMYK": ('|u1', 4),
     "YCbCr": ('|u1', 3),
     "LAB": ('|u1', 3),  # UNDONE - unsigned |u1i1i1
+    "HSV": ('|u1', 3),
     # I;16 == I;16L, and I;32 == I;32L
     "I;16": ('<u2', None),
     "I;16B": ('>u2', None),
diff --git a/Tests/test_numpy.py b/Tests/test_numpy.py
index 64081894e..4f02fde23 100644
--- a/Tests/test_numpy.py
+++ b/Tests/test_numpy.py
@@ -113,6 +113,7 @@ class TestNumpy(PillowTestCase):
                  ("I;16", '<u2'),
                  ("I;16B", '>u2'),
                  ("I;16L", '<u2'),
+                 ("HSV", 'uint8'),
                  ]
 
         for mode in modes: