diff --git a/pre_commit_hooks/mixed_line_ending.py b/pre_commit_hooks/mixed_line_ending.py
index 16cac56..6bcfb24 100644
--- a/pre_commit_hooks/mixed_line_ending.py
+++ b/pre_commit_hooks/mixed_line_ending.py
@@ -31,10 +31,11 @@ class MixedLineEndingOption(Enum):
 
 
 class MixedLineDetection(Enum):
-    MIXED_MOSTLY_CRLF = 1, True, LineEnding.CRLF
-    MIXED_MOSTLY_LF = 2, True, LineEnding.LF
-    NOT_MIXED = 3, False, None
-    UNKNOWN = 4, False, None
+    NOT_MIXED = 1, False, None
+    UNKNOWN = 2, False, None
+    MIXED_MOSTLY_CRLF = 3, True, LineEnding.CRLF
+    MIXED_MOSTLY_LF = 4, True, LineEnding.LF
+    MIXED_MOSTLY_CR = 5, True, LineEnding.CR
 
     def __init__(self, index, mle_found, line_ending_enum):
         # TODO hack to prevent enum overriding
diff --git a/tests/mixed_line_ending_test.py b/tests/mixed_line_ending_test.py
index 6c83067..00f5a84 100644
--- a/tests/mixed_line_ending_test.py
+++ b/tests/mixed_line_ending_test.py
@@ -8,12 +8,22 @@ TESTS_FIX_AUTO = (
     (b'foo\nbar\nbaz\n', 0, b'foo\nbar\nbaz\n'),
     # only 'CRLF'
     (b'foo\r\nbar\r\nbaz\r\n', 0, b'foo\r\nbar\r\nbaz\r\n'),
+    # only 'CR'
+    (b'foo\rbar\rbaz\r', 0, b'foo\rbar\rbaz\r'),
     # mixed with majority of 'LF'
     (b'foo\r\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
     # mixed with majority of 'CRLF'
     (b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
+    # mixed with majority of 'CR'
+    (b'foo\rbar\nbaz\r', 1, b'foo\rbar\rbaz\r'),
     # mixed with as much 'LF' as 'CRLF'
     (b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\nbaz'),
+    # mixed with as much 'LF' as 'CR'
+    (b'foo\rbar\nbaz', 1, b'foo\rbar\nbaz'),
+    # mixed with as much 'CRLF' as 'CR'
+    (b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\nbaz'),
+    # mixed with as much 'CRLF' as 'LF' as 'CR'
+    (b'foo\r\nbar\nbaz\r', 1, b'foo\r\nbar\nbaz\r'),
 )
 
 
@@ -34,10 +44,20 @@ TESTS_NO_FIX = (
     (b'foo\nbar\nbaz\n', 0, b'foo\nbar\nbaz\n'),
     # only 'CRLF'
     (b'foo\r\nbar\r\nbaz\r\n', 0, b'foo\r\nbar\r\nbaz\r\n'),
+    # only 'CR'
+    (b'foo\rbar\rbaz\r', 0, b'foo\rbar\rbaz\r'),
     # mixed with majority of 'LF'
     (b'foo\r\nbar\nbaz\n', 1, b'foo\r\nbar\nbaz\n'),
     # mixed with majority of 'CRLF'
     (b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\nbaz\r\n'),
+    # mixed with majority of 'CR'
+    (b'foo\rbar\nbaz\r', 1, b'foo\rbar\nbaz\r'),
+    # mixed with as much 'LF' as 'CR'
+    (b'foo\rbar\nbaz', 0, b'foo\rbar\nbaz'),
+    # mixed with as much 'CRLF' as 'CR'
+    (b'foo\r\nbar\nbaz', 0, b'foo\r\nbar\nbaz'),
+    # mixed with as much 'CRLF' as 'LF' as 'CR'
+    (b'foo\r\nbar\nbaz\r', 0, b'foo\r\nbar\nbaz\r'),
 )
 
 
@@ -58,10 +78,20 @@ TESTS_FIX_FORCE_LF = (
     (b'foo\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
     # only 'CRLF'
     (b'foo\r\nbar\r\nbaz\r\n', 1, b'foo\nbar\nbaz\n'),
+    # only 'CR'
+    (b'foo\rbar\rbaz\r', 1, b'foo\nbar\nbaz\n'),
     # mixed with majority of 'LF'
     (b'foo\r\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
     # mixed with majority of 'CRLF'
     (b'foo\r\nbar\nbaz\r\n', 1, b'foo\nbar\nbaz\n'),
+    # mixed with majority of 'CR'
+    (b'foo\rbar\nbaz\r', 1, b'foo\nbar\nbaz\n'),
+    # mixed with as much 'LF' as 'CR'
+    (b'foo\rbar\nbaz', 1, b'foo\nbar\nbaz'),
+    # mixed with as much 'CRLF' as 'CR'
+    (b'foo\r\nbar\nbaz', 1, b'foo\nbar\nbaz'),
+    # mixed with as much 'CRLF' as 'LF' as 'CR'
+    (b'foo\r\nbar\nbaz\r', 1, b'foo\nbar\nbaz\n'),
 )
 
 
@@ -83,10 +113,20 @@ TESTS_FIX_FORCE_CRLF = (
     (b'foo\nbar\nbaz\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
     # only 'CRLF'
     (b'foo\r\nbar\r\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
+    # only 'CR'
+    (b'foo\rbar\rbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
     # mixed with majority of 'LF'
     (b'foo\r\nbar\nbaz\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
     # mixed with majority of 'CRLF'
     (b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
+    # mixed with majority of 'CR'
+    (b'foo\rbar\nbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
+    # mixed with as much 'LF' as 'CR'
+    (b'foo\rbar\nbaz', 1, b'foo\r\nbar\r\nbaz'),
+    # mixed with as much 'CRLF' as 'CR'
+    (b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\r\nbaz'),
+    # mixed with as much 'CRLF' as 'LF' as 'CR'
+    (b'foo\r\nbar\nbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
 )