diff --git a/scripts/acoustics.py b/scripts/acoustics.py
index 4c3f43331590d63e55e202895380a0bbd3bd2499..1e87d6e67d8b1cb64ab035db01ad2a499f74c74e 100644
--- a/scripts/acoustics.py
+++ b/scripts/acoustics.py
@@ -173,9 +173,9 @@ while check:
     DUs = []
     for du in range(N_DUS):
         duabdu = []
-        duab1 = (du+0.9)*np.ones(L)
-        duab2 = (du+1)*np.ones(L)
-        duab3 = (du+1.1)*np.ones(L)
+        duab1 = (du + 0.9)*np.ones(L)
+        duab2 = (du + 1)*np.ones(L)
+        duab3 = (du + 1.1)*np.ones(L)
         duabdu.append(duab1)
         duabdu.append(duab2)
         duabdu.append(duab3)