diff --git a/picoscope/ps3000a.py b/picoscope/ps3000a.py
index e24a172..4f20794 100644
--- a/picoscope/ps3000a.py
+++ b/picoscope/ps3000a.py
@@ -120,7 +120,7 @@ class PS3000a(_PicoscopeBase):
     # 10_5_0_28
     # This issue was acknowledged in this thread
     # http://www.picotech.com/support/topic13217.html
-    AWGMaxVa = 32767
+    AWGMaxVal = 32767
     AWGMinVal = -32767
 
     AWG_INDEX_MODES = {"Single": 0, "Dual": 1, "Quad": 2}