diff --git a/MultiThreadIO.py b/MultiThreadIO.py
index 1088f10..2577944 100644
--- a/MultiThreadIO.py
+++ b/MultiThreadIO.py
@@ -64,7 +64,10 @@ def process_input_line(line, startsnp, stopsnp, dtype):
     if startsnp is not None :
         parts = parts[startsnp : stopsnp + 1] #Offset 1 for id and 2 for id + include stopsnp
 
-    data=np.array([int(val) for val in parts], dtype = dtype)
+    if dtype in [np.float16, np.float32, np.float64] :
+        data = np.array([val for val in parts], dtype=dtype)
+    else :
+        data = np.array([int(val) for val in parts], dtype = dtype)
 
     return (idx, data)
 
diff --git a/Pedigree.py b/Pedigree.py
index 090f248..339f97e 100644
--- a/Pedigree.py
+++ b/Pedigree.py
@@ -942,7 +942,7 @@ def readInAAP(self, fileName):
         :param fileName: The file path
         :type fileName: str
         """        
-        data_list = MultiThreadIO.readLines(fileName, startsnp=None, stopsnp=None, dtype = np.int64)
+        data_list = MultiThreadIO.readLines(fileName, startsnp=None, stopsnp=None, dtype = np.float32)
 
         # flag of whether adding a default alternative allele probability
         default_aap = False