diff --git a/examples/injection_examples/eccentric_inspiral.py b/examples/injection_examples/eccentric_inspiral.py
index fbe71b0a55fe3bbc38f0b2c6d623f06e8c521438..79bdf8088e8cee636b389132ff09a5e0d0ff1937 100644
--- a/examples/injection_examples/eccentric_inspiral.py
+++ b/examples/injection_examples/eccentric_inspiral.py
@@ -66,7 +66,7 @@ priors["luminosity_distance"] =  tupak.gw.prior.UniformComovingVolume(name='lumi
 priors["dec"] =  tupak.core.prior.Cosine(name='dec')
 priors["ra"] =  tupak.core.prior.Uniform(name='ra', minimum=0, maximum=2 * np.pi)
 priors["iota"] =  tupak.core.prior.Sine(name='iota')
-priors["psi"] =  tupak.core.prior.Uniform(name='psi', minimum=0, maximum=2 * np.pi)
+priors["psi"] =  tupak.core.prior.Uniform(name='psi', minimum=0, maximum=np.pi)
 priors["phase"] =  tupak.core.prior.Uniform(name='phase', minimum=0, maximum=2 * np.pi)
 priors["geocent_time"] = tupak.core.prior.Uniform(1180002600.9, 1180002601.1, name='geocent_time')
 
diff --git a/optional_requirements.txt b/optional_requirements.txt
index bb4d2aadd2451de8043928164baa0c8e428fdf45..c002738f5c87d5ff8f6533c0f94ae2f857d3df96 100644
--- a/optional_requirements.txt
+++ b/optional_requirements.txt
@@ -1,4 +1,4 @@
 astropy
-lalsuite
+lalsuite<=6.48.1.dev20180823
 gwpy
 theano
\ No newline at end of file
diff --git a/tupak/gw/prior_files/GW150914.prior b/tupak/gw/prior_files/GW150914.prior
index 276a6b9f710b3835206441279b2b3ffbe7644b32..8c372425f351e4df9012377101e9b41d8e1da85a 100644
--- a/tupak/gw/prior_files/GW150914.prior
+++ b/tupak/gw/prior_files/GW150914.prior
@@ -11,7 +11,7 @@ luminosity_distance =  tupak.gw.prior.UniformComovingVolume(name='luminosity_dis
 dec =  Cosine(name='dec')
 ra =  Uniform(name='ra', minimum=0, maximum=2 * np.pi)
 iota =  Sine(name='iota')
-psi =  Uniform(name='psi', minimum=0, maximum=2 * np.pi)
+psi =  Uniform(name='psi', minimum=0, maximum=np.pi)
 phase =  Uniform(name='phase', minimum=0, maximum=2 * np.pi)
 geocent_time = Uniform(1126259462.322, 1126259462.522, name='geocent_time')
 # These are the calibration parameters as described in
diff --git a/tupak/gw/prior_files/binary_black_holes.prior b/tupak/gw/prior_files/binary_black_holes.prior
index 2d91e1f7ea491e56774b8345ef7f718423648a17..7dfc784a2107c1b0eb5a837743a054fef3fc7c37 100644
--- a/tupak/gw/prior_files/binary_black_holes.prior
+++ b/tupak/gw/prior_files/binary_black_holes.prior
@@ -21,5 +21,5 @@ dec =  Cosine(name='dec')
 ra =  Uniform(name='ra', minimum=0, maximum=2 * np.pi)
 iota =  Sine(name='iota')
 # cos_iota =  Uniform(name='cos_iota', minimum=-1, maximum=1)
-psi =  Uniform(name='psi', minimum=0, maximum=2 * np.pi)
+psi =  Uniform(name='psi', minimum=0, maximum=np.pi)
 phase =  Uniform(name='phase', minimum=0, maximum=2 * np.pi)