diff --git a/tests/resources/image10x11x12x13.mha b/tests/resources/image10x11x12x13.mha
index 36531b3..0d089b6 100644
Binary files a/tests/resources/image10x11x12x13.mha and b/tests/resources/image10x11x12x13.mha differ
diff --git a/tests/resources/image10x11x12x13.mhd b/tests/resources/image10x11x12x13.mhd
index 5175196..ffa7f4d 100644
--- a/tests/resources/image10x11x12x13.mhd
+++ b/tests/resources/image10x11x12x13.mhd
@@ -7,7 +7,7 @@ CompressedDataSize = 40
 TransformMatrix = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
 Offset = -131 -99 -917 0
 CenterOfRotation = 0 0 0 0
-ElementSpacing = 0.429 0.429 0.5 1
+ElementSpacing = 0.42899999999999999 0.42899999999999999 0.5 1
 DimSize = 10 11 12 13
 AnatomicalOrientation = ????
 ElementType = MET_UCHAR
diff --git a/tests/test_mhd.py b/tests/test_mhd.py
index 72b4518..6987251 100644
--- a/tests/test_mhd.py
+++ b/tests/test_mhd.py
@@ -31,7 +31,7 @@ def test_parse_header_valid_4d_mhd():
         "Offset": "-131 -99 -917 0",
         "CenterOfRotation": "0 0 0 0",
         "AnatomicalOrientation": "????",
-        "ElementSpacing": "0.429 0.429 0.5 1",
+        "ElementSpacing": "0.42899999999999999 0.42899999999999999 0.5 1",
         "DimSize": "10 11 12 13",
         "ElementType": "MET_UCHAR",
         "ElementDataFile": "image10x11x12x13.zraw",