diff --git a/simulations/lib/location/antenna.py b/simulations/lib/location/antenna.py
index 824eccc..6760345 100644
--- a/simulations/lib/location/antenna.py
+++ b/simulations/lib/location/antenna.py
@@ -1,9 +1,6 @@
 from functools import partial
 
-try:
-    from .location import Location
-except ImportError:
-    from location import Location
+from .location import Location
 
 class Antenna(Location):
     """
diff --git a/simulations/lib/location/example.py b/simulations/lib/location/example.py
index 45b485b..9f37de6 100755
--- a/simulations/lib/location/example.py
+++ b/simulations/lib/location/example.py
@@ -3,8 +3,14 @@
 import matplotlib.pyplot as plt
 from mpl_toolkits.mplot3d import axes3d
 
-import location as loc
-from antenna import Receiver, Emitter
+# fix package-internal importing
+if __name__ == "__main__" and __package__ is None:
+    import sys
+    sys.path.append("../../")
+    __package__ = "lib.location"
+
+from . import location as loc
+from ..location.antenna import Receiver, Emitter
 
 # 2D showcase
 source = Emitter([1,1])
diff --git a/simulations/lib/signals/digitisedsignal.py b/simulations/lib/signals/digitisedsignal.py
index 5d2a09c..59d683d 100755
--- a/simulations/lib/signals/digitisedsignal.py
+++ b/simulations/lib/signals/digitisedsignal.py
@@ -2,10 +2,12 @@
 import numpy as np
 import scipy.interpolate as interp
 
-try:
-    from .signal import *
-except ImportError:
-    from signal import *
+if __name__ == "__main__" and __package__ is None:
+    import sys
+    sys.path.append("../../")
+    __package__ = "lib.signals"
+
+from .signal import *
 
 class DigitisedSignal(Signal):
     """