diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index db3eaa50e..ec67506a2 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -233,6 +233,10 @@ OPEN_INFO = {
 
     (II, 5, (1,), 1, (8, 8, 8, 8), ()): ("CMYK", "CMYK"),
     (MM, 5, (1,), 1, (8, 8, 8, 8), ()): ("CMYK", "CMYK"),
+    (II, 5, (1,), 1, (8, 8, 8, 8, 8), (0,)): ("CMYK", "CMYKX"),
+    (MM, 5, (1,), 1, (8, 8, 8, 8, 8), (0,)): ("CMYK", "CMYKX"),
+    (II, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
+    (MM, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
 
     (II, 6, (1,), 1, (8, 8, 8), ()): ("YCbCr", "YCbCr"),
     (MM, 6, (1,), 1, (8, 8, 8), ()): ("YCbCr", "YCbCr"),
diff --git a/src/libImaging/Unpack.c b/src/libImaging/Unpack.c
index 691eec7c1..b9a882c62 100644
--- a/src/libImaging/Unpack.c
+++ b/src/libImaging/Unpack.c
@@ -1041,6 +1041,28 @@ copy4(UINT8* out, const UINT8* in, int pixels)
     memcpy(out, in, 4 * pixels);
 }
 
+static void
+copy4skip1(UINT8* _out, const UINT8* in, int pixels)
+{
+    int i;
+    UINT32* out = (UINT32*) _out;
+    for (i = 0; i < pixels; i++) {
+        out[i] = *(UINT32*)&in[0];
+        in += 5;
+    }
+}
+
+static void
+copy4skip2(UINT8* _out, const UINT8* in, int pixels)
+{
+    int i;
+    UINT32* out = (UINT32*) _out;
+    for (i = 0; i < pixels; i++) {
+        out[i] = *(UINT32*)&in[0];
+        in += 6;
+    }
+}
+
 
 /* Unpack to "I" and "F" images */
 
@@ -1344,6 +1366,8 @@ static struct {
 
     /* colour separation */
     {"CMYK",    "CMYK",         32,     copy4},
+    {"CMYK",    "CMYKX",        40,     copy4skip1},
+    {"CMYK",    "CMYKXX",       48,     copy4skip2},
     {"CMYK",    "CMYK;I",       32,     unpackCMYKI},
     {"CMYK",    "CMYK;L",       32,     unpackRGBAL},
     {"CMYK",    "C",            8,      band0},