diff --git a/examples/gauss_param.py b/examples/gauss_param.py
index a08e4629461a0a0de157c73ab76fffece96fa1cc..75acf384131a5b0e50e41883f8a22e2b31ddbe33 100644
--- a/examples/gauss_param.py
+++ b/examples/gauss_param.py
@@ -1,15 +1,15 @@
-from pykat.utilities.optics.ABCD import apply, mirror_trans
-from pykat.utilities.optics.gaussian_beams import gauss_param
-
-nr1 = 1
-nr2 = 1.44963098985906
-q1 = gauss_param(q=5.96343 + 3.04713j)
-abcd = mirror_trans(nr1, nr2, float("inf"))
-# into material
-q2 = apply(abcd, q1, nr1, nr2)
-# and out again
-q3 = apply(abcd, q2, nr2, nr1)
-
-print "q1 =", q1, " w0 =", q1.w0, " wz =", q1.wz, " z =", q1.z
-print "q2 =", q2, " w0 =", q2.w0, " wz =", q2.wz, " z =", q2.z
-print "q3 =", q3, " w0 =", q3.w0, " wz =", q3.wz, " z =", q3.z
+from pykat.utilities.optics.ABCD import apply, mirror_trans
+from pykat.utilities.optics.gaussian_beams import gauss_param
+
+nr1 = 1
+nr2 = 1.44963098985906
+q1 = gauss_param(q=5.96343 + 3.04713j)
+abcd = mirror_trans(nr1, nr2, float("inf"))
+# into material
+q2 = apply(abcd, q1, nr1, nr2)
+# and out again
+q3 = apply(abcd, q2, nr2, nr1)
+
+print "q1 =", q1, " w0 =", q1.w0, " w =", q1.w, " z =", q1.z
+print "q2 =", q2, " w0 =", q2.w0, " w =", q2.w, " z =", q2.z
+print "q3 =", q3, " w0 =", q3.w0, " w =", q3.w, " z =", q3.z
diff --git a/pykat/utilities/optics/gaussian_beams.py b/pykat/utilities/optics/gaussian_beams.py
index 754135cfd694a9dd3165878d99f4434f229ff584..e7572042280aac28048a1d4fad448d964b38c0e3 100644
--- a/pykat/utilities/optics/gaussian_beams.py
+++ b/pykat/utilities/optics/gaussian_beams.py
@@ -68,7 +68,7 @@ class gauss_param(object):
     def zr(self): return self.__q.imag
     
     @property
-    def wz(self):
+    def w(self):
         return self.w0 * math.sqrt(1 + (self.__q.real/self.__q.imag)**2)
     
     @property
@@ -188,4 +188,4 @@ class HG_gauss_beam(object):
         # need to finish...
         return self.__xpre_const
         
-        
\ No newline at end of file
+