diff --git a/tests/test_psf.py b/tests/test_psf.py
index ff20a12..291c470 100644
--- a/tests/test_psf.py
+++ b/tests/test_psf.py
@@ -502,7 +502,7 @@ def testPiffDeterminer_skyCoords(self):
 
         self.checkPiffDeterminer(useCoordinates='sky')
 
-    @lsst.utils.tests.methodParameters(angle_degrees=[0, 35, 77, 135])
+    @lsst.utils.tests.methodParameters(angle_degrees=[0, 35, 45, 77, 135])
     def testPiffDeterminer_skyCoords_with_rotation(self, angle_degrees):
         """Test Piff sky coords with rotation."""
 
@@ -510,17 +510,6 @@ def testPiffDeterminer_skyCoords_with_rotation(self, angle_degrees):
         self.exposure.setWcs(wcs)
         self.checkPiffDeterminer(useCoordinates='sky', kernelSize=35)
 
-    # TODO: Merge this case with the above in DM-44467.
-    @unittest.skipUnless(Version(galsim.version) >= Version("2.5.2"),
-                         reason="Requires GalSim >= 2.5.2",
-                         )
-    def testPiffDeterminer_skyCoords_rot45(self):
-        """Test Piff sky coords."""
-
-        wcs = make_wcs(angle_degrees=45)
-        self.exposure.setWcs(wcs)
-        self.checkPiffDeterminer(useCoordinates='sky', kernelSize=35)
-
     def testPiffDeterminer_skyCoords_failure(self, angle_degrees=135):
         """Test that using small PSF candidates with sky coordinates fails."""
         wcs = make_wcs(angle_degrees=angle_degrees)