diff --git a/modules/amv/aeolus.py b/modules/amv/aeolus.py
index c406492fb4e8c80bbf18733bb935eb1e04da661f..b1ce78d8675f649c9620e59f8ca972efbec6ff51 100644
--- a/modules/amv/aeolus.py
+++ b/modules/amv/aeolus.py
@@ -538,6 +538,7 @@ def get_grid_values(h5f, grid_name, scale_factor_name='scale_factor', add_offset
 
     grd_vals = hfds[:, :]
     grd_vals = np.where(grd_vals == -999, np.nan, grd_vals)
+    grd_vals = np.where(grd_vals == -127, np.nan, grd_vals)
     grd_vals = np.where(grd_vals == -32768, np.nan, grd_vals)
 
     if attrs is None: