diff --git a/mcerp/correlate.py b/mcerp/correlate.py
index ea78257..56f17ae 100644
--- a/mcerp/correlate.py
+++ b/mcerp/correlate.py
@@ -131,18 +131,18 @@ def plotcorr(X, plotargs=None, full=True, labels=None):
 
         # Set up ticks only on one side for the "edge" subplots...
         if full:
-            if ax.is_first_col():
+            if ax.get_subplotspec().is_first_col():
                 ax.yaxis.set_ticks_position("left")
-            if ax.is_last_col():
+            if ax.get_subplotspec().is_last_col():
                 ax.yaxis.set_ticks_position("right")
-            if ax.is_first_row():
+            if ax.get_subplotspec().is_first_row():
                 ax.xaxis.set_ticks_position("top")
-            if ax.is_last_row():
+            if ax.get_subplotspec().is_last_row():
                 ax.xaxis.set_ticks_position("bottom")
         else:
-            if ax.is_first_row():
+            if ax.get_subplotspec().is_first_row():
                 ax.xaxis.set_ticks_position("top")
-            if ax.is_last_col():
+            if ax.get_subplotspec().is_last_col():
                 ax.yaxis.set_ticks_position("right")
 
     # Label the diagonal subplots...