diff --git a/PIL/PdfImagePlugin.py b/PIL/PdfImagePlugin.py
index 2a8a8d443..c89ca3ee0 100644
--- a/PIL/PdfImagePlugin.py
+++ b/PIL/PdfImagePlugin.py
@@ -105,7 +105,7 @@ def _save(im, fp, filename):
             g = i8(palette[i*3+1])
             b = i8(palette[i*3+2])
             colorspace = colorspace + "%02x%02x%02x " % (r, g, b)
-        colorspace = colorspace + b"> ]"
+        colorspace = colorspace + "> ]"
         procset = "/ImageI" # indexed color
     elif im.mode == "RGB":
         filter = "/DCTDecode"
diff --git a/Tests/test_file_pdf.py b/Tests/test_file_pdf.py
index e31878aef..e99f22db1 100644
--- a/Tests/test_file_pdf.py
+++ b/Tests/test_file_pdf.py
@@ -39,19 +39,12 @@ def test_rgb():
     helper_save_as_pdf(mode)
 
 
-# FIXME: P-mode test fails on Python 3.
-# https://travis-ci.org/hugovk/Pillow/builds/24915249
-#   File "/home/travis/build/hugovk/Pillow/PIL/PdfImagePlugin.py", line 108,
-#   in _save
-#     colorspace = colorspace + b"> ]"
-# TypeError: Can't convert 'bytes' object to str implicitly
-#
-# def test_p_mode():
-#     # Arrange
-#     mode = "P"
-#
-#     # Act / Assert
-#     helper_save_as_pdf(mode)
+def test_p_mode():
+    # Arrange
+    mode = "P"
+
+    # Act / Assert
+    helper_save_as_pdf(mode)
 
 
 def test_cmyk_mode():