diff --git a/resources/complex/complex32.nii b/resources/complex/complex32.nii
new file mode 100644
index 0000000..0f004a5
Binary files /dev/null and b/resources/complex/complex32.nii differ
diff --git a/resources/complex/complex64.nii b/resources/complex/complex64.nii
new file mode 100644
index 0000000..0db122f
Binary files /dev/null and b/resources/complex/complex64.nii differ
diff --git a/tests/writer.rs b/tests/writer.rs
index 672c730..d6ccd8e 100644
--- a/tests/writer.rs
+++ b/tests/writer.rs
@@ -548,7 +548,7 @@ mod tests {
 
         assert_eq!(
             fs::read(path).unwrap(),
-            fs::read("resources/complex/complex32.nii").unwrap()
+            fs::read("resources/complex/complex64.nii").unwrap()
         );
     }