diff --git a/cuburn/_pyflam3_hacks.py b/cuburn/_pyflam3_hacks.py
index 0489ada..43dd550 100644
--- a/cuburn/_pyflam3_hacks.py
+++ b/cuburn/_pyflam3_hacks.py
@@ -129,7 +129,7 @@ BaseXForm._fields_ = [('var', c_double * flam3_nvariations)
                , ('whorl_outside', c_double)
                , ('waves2_freqx', c_double)
                , ('waves2_scalex', c_double)
-               , ('waves2_freqyx', c_double)
+               , ('waves2_freqy', c_double)
                , ('waves2_scaley', c_double)
                , ('auger_sym', c_double)
                , ('auger_weight', c_double)
diff --git a/cuburn/code/variations.py b/cuburn/code/variations.py
index 0db38d8..8369d47 100644
--- a/cuburn/code/variations.py
+++ b/cuburn/code/variations.py
@@ -854,7 +854,7 @@ var(81, 'waves2', """
     """)
 
 var(82, 'exp', """
-    float expe = expf(f->tx);
+    float expe = expf(tx);
     ox += w * expe * cosf(ty);
     oy += w * expe * sinf(ty);
     """)