diff --git a/nemo/completeness.py b/nemo/completeness.py
index d9ed382..709b9a2 100644
--- a/nemo/completeness.py
+++ b/nemo/completeness.py
@@ -1679,7 +1679,7 @@ def tidyUp(config):
     # Make MEFs
     MEFsToBuild=["RMSMap_%s" % (config.parDict['photFilter'])]
     compressionTypes=["RICE_1"]
-    dtypes=[np.float]
+    dtypes=[np.float32]
     if 'selFnFootprints' in config.parDict.keys():
         for footprintDict in config.parDict['selFnFootprints']:
             MEFsToBuild.append("intersect_%s" % footprintDict['label'])
diff --git a/nemo/maps.py b/nemo/maps.py
index df50786..095bb3d 100644
--- a/nemo/maps.py
+++ b/nemo/maps.py
@@ -553,7 +553,7 @@ def saveMEF(self, outFileName, compressionType = None):
                 if compressionType == 'PLIO_1':
                     dtype=np.uint8
                 else:
-                    dtype=np.float
+                    dtype=np.float32
                 hdu=pyfits.CompImageHDU(np.array(self[tileName], dtype = dtype),
                                         header, name = tileName,
                                         compression_type = compressionType)
@@ -2395,7 +2395,7 @@ def saveFITS(outputFileName, mapData, wcs, compressionType = None):
             if compressionType == 'PLIO_1':
                 dtype=np.uint8
             else:
-                dtype=np.float
+                dtype=np.float32
             hdu=pyfits.CompImageHDU(np.array(mapData, dtype = dtype), wcs.header, 
                                     compression_type = compressionType)
         else: