diff --git a/data/gan.py b/data/gan.py
index 0d449d2..621cea9 100644
--- a/data/gan.py
+++ b/data/gan.py
@@ -609,7 +609,7 @@ class Predict(GNet):
                                 # let's get the missing rows (if any) ...
                                 #
                                 ii = df.apply(lambda row: np.sum(row) == 0 ,axis=1)
-                                if ii :
+                                if ii.shape[0] == 0 :
                                         #
                                         #@TODO Have this be a configurable variable
                                         missing = np.repeat(0, np.where(ii==1)[0].size)