diff --git a/impl/utils/plot_spectrum_loop.py b/impl/utils/plot_spectrum_loop.py
index aba9ff4..ebb0f49 100755
--- a/impl/utils/plot_spectrum_loop.py
+++ b/impl/utils/plot_spectrum_loop.py
@@ -14,7 +14,7 @@ def load_data():
             print(f"Error: not a complex signal file. Format {header} not implemented yet.")
             exit(1)
 
-        T = np.fromfile(infile, dtype=np.float32, count=1)
+        T = np.fromfile(infile, dtype=np.float32, count=1)[0]
         data = np.fromfile(infile, dtype=np.complex64)
 
         f = np.arange(-1/(2*T), 1/(2*T), 1/T/data.size)[:data.size]
diff --git a/impl/utils/plot_timedomain.py b/impl/utils/plot_timedomain.py
index 9ae8a77..1d919b1 100755
--- a/impl/utils/plot_timedomain.py
+++ b/impl/utils/plot_timedomain.py
@@ -8,10 +8,10 @@ import matplotlib.pyplot as pp
 with open(sys.argv[1], 'rb') as infile:
     header = infile.read(4)
     if header == b'CPX_':
-        T = np.fromfile(infile, dtype=np.float32, count=1)
+        T = np.fromfile(infile, dtype=np.float32, count=1)[0]
         data = np.fromfile(infile, dtype=np.complex64)
     elif header == b'FLT_':
-        T = np.fromfile(infile, dtype=np.float32, count=1)
+        T = np.fromfile(infile, dtype=np.float32, count=1)[0]
         data = np.fromfile(infile, dtype=np.float32)
     else:
         print(f"Error: Format {header} not implemented yet.")