diff --git a/sip_tpv/pv_to_sip.py b/sip_tpv/pv_to_sip.py
index 991955a..17e84f3 100755
--- a/sip_tpv/pv_to_sip.py
+++ b/sip_tpv/pv_to_sip.py
@@ -34,7 +34,7 @@
 
 from copy import copy
 import astropy.io.fits as fits
-from .pvsiputils import(get_pv_keywords,
+from pvsiputils import(get_pv_keywords,
                        sym_sipexprs,
                        real_tpvexprs,
                        add_sip_keywords,
diff --git a/sip_tpv/pvsiputils.py b/sip_tpv/pvsiputils.py
index 28be242..395867d 100644
--- a/sip_tpv/pvsiputils.py
+++ b/sip_tpv/pvsiputils.py
@@ -30,7 +30,7 @@
 
 from sympy import symbols, Matrix, poly
 import numpy as np
-from .reverse import *
+from reverse import *
 
 
 def sym_tpvexprs():
diff --git a/sip_tpv/sip_to_pv.py b/sip_tpv/sip_to_pv.py
index 9e4c07f..29f3ba8 100755
--- a/sip_tpv/sip_to_pv.py
+++ b/sip_tpv/sip_to_pv.py
@@ -34,7 +34,7 @@
 
 from copy import copy
 import astropy.io.fits as fits
-from sip_tpv.pvsiputils import (sym_tpvexprs,
+from pvsiputils import (sym_tpvexprs,
                         get_sip_keywords,
                         real_sipexprs,
                         add_pv_keywords,