diff --git a/qpms/__init__.py b/qpms/__init__.py
index e7caea7..61ec6cd 100644
--- a/qpms/__init__.py
+++ b/qpms/__init__.py
@@ -24,7 +24,7 @@ from .cymaterials import MaterialInterpolator, EpsMu, LorentzDrudeModel, lorentz
 from .cycommon import dbgmsg_enable, dbgmsg_disable, dbgmsg_active, BesselType, VSWFType
 from .cywaves import vswf_single
 
-from .qpms_p import * # maybe don't import automatically in the future (adds around 0.5 s delay)
+#from .qpms_p import * # don't import automatically (adds around 0.5 s delay and depends on scipy)
 from .constants import *
 
 # legacy code which brutally slows down the whole package init:
diff --git a/setup.py b/setup.py
index 6291afd..3fb7b3b 100755
--- a/setup.py
+++ b/setup.py
@@ -161,7 +161,7 @@ setup(name='qpms',
         setup_requires=['cython>=0.28','numpy>=1.2','setuptools>=18.0'],
         install_requires=['cython>=0.28',
             #'quaternion','spherical_functions',
-            'scipy>=0.18.0', 'sympy>=1.2', 'numpy>=1.2'],
+            'sympy>=1.2', 'numpy>=1.2'],
         #dependency_links=['https://github.com/moble/quaternion/archive/v2.0.tar.gz','https://github.com/moble/spherical_functions/archive/master.zip'],
         ext_modules=cythonize([qpms_c, cywaves, cytranslations, cytmatrices, cycommon, cyquaternions, cybspec, cymaterials, cyewaldtest], include_path=['qpms', 'amos'], gdb_debug=True),
         cmdclass = {'build_ext': build_ext},