diff --git a/python/receiver/sch_detector.py b/python/receiver/sch_detector.py
index cdf9a9e..d5d05b0 100644
--- a/python/receiver/sch_detector.py
+++ b/python/receiver/sch_detector.py
@@ -37,7 +37,7 @@
         self.OSR = OSR
         sync_seq_msk_tmp = self.msk_mod(self.sync_seq, -1j)
         self.sync_seq_msk = sync_seq_msk_tmp[5:59]
-        self.sync_seq_msk_interp = zeros(self.OSR*len(self.sync_seq_msk), dtype=np.complex64)
+        self.sync_seq_msk_interp = zeros(self.OSR*len(self.sync_seq_msk), dtype=complex64)
         self.sync_seq_msk_interp[::OSR] = self.sync_seq_msk
         self.L = 5
 
@@ -49,7 +49,7 @@
     
     def get_chan_imp_resp(self, sch_burst):
         sch_burst_bl = resize(array(sch_burst), (int(len(sch_burst)/self.OSR),self.OSR))
-        correlation_bl = zeros(shape(sch_burst_bl), dtype=np.complex64)
+        correlation_bl = zeros(shape(sch_burst_bl), dtype=complex64)
         for ii in xrange(0,self.OSR):
             correlation_bl[:,ii]=correlate(sch_burst_bl[:,ii],self.sync_seq_msk,'same')