diff --git a/glymur/test/fixtures.py b/glymur/test/fixtures.py
index 8e8deb8..a1fa2ec 100644
--- a/glymur/test/fixtures.py
+++ b/glymur/test/fixtures.py
@@ -580,8 +580,9 @@ file1_xml = """XML Box (xml ) @ (36, 439)
 
 issue_182_cmap = """Component Mapping Box (cmap) @ (130, 24)
     Component 0 ==> palette column 0
-    Component 1 ==> palette column 0
-    Component 2 ==> 2"""
+    Component 0 ==> palette column 1
+    Component 0 ==> palette column 2
+    Component 0 ==> palette column 3"""
 
 issue_183_colr = """Colour Specification Box (colr) @ (62, 12)
     Method:  restricted ICC profile
diff --git a/glymur/test/test_opj_suite.py b/glymur/test/test_opj_suite.py
index 28e9a0f..069884a 100644
--- a/glymur/test/test_opj_suite.py
+++ b/glymur/test/test_opj_suite.py
@@ -5830,9 +5830,9 @@ class TestSuiteDump(unittest.TestCase):
 
         # Jp2 Header
         # Component mapping box
-        self.assertEqual(jp2.box[3].box[3].component_index, (0, 1, 2))
-        self.assertEqual(jp2.box[3].box[3].mapping_type, (1, 1, 0))
-        self.assertEqual(jp2.box[3].box[3].palette_index, (0, 0, 1))
+        self.assertEqual(jp2.box[3].box[3].component_index, (0, 0, 0, 0))
+        self.assertEqual(jp2.box[3].box[3].mapping_type, (1, 1, 1, 1))
+        self.assertEqual(jp2.box[3].box[3].palette_index, (0, 1, 2, 3))
 
         c = jp2.box[4].main_header