diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0585dc3..284c810 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,7 +56,7 @@ execute_process(COMMAND ${VERSION_GETTER}
                 WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
 file (STRINGS "${CMAKE_BINARY_DIR}/TEMP_VERSION.txt" VERSION)
 if(NOT "${VERSION_GET_RESULT}" STREQUAL "0")
-    message(FATAL_ERROR "${BoldRed}Error: Unable to get version number by executing ${VERSION_GETTER}${ColourReset}")
+    message(FATAL_ERROR "${BoldRed}Error: Unable to get version number by executing ${VERSION_GETTER}. Call output is: ${VERSION_GET_OUTPUT}; and call's error output is: ${VERSION_GET_ERROR}${ColourReset}")
 endif()
 add_definitions(-DSPINTRUM_VERSION="${VERSION}")
 message("${BoldBlue}Building Spintrum, version: ${VERSION}${ColourReset}")
diff --git a/setup.py b/setup.py
index 30e47d1..eac9bc3 100644
--- a/setup.py
+++ b/setup.py
@@ -260,7 +260,7 @@ setup(name='spintrum',
       author_email='samer@afach.de',
       license='MPL',
       packages=['spintrum'],
-      install_requires=['numpy', 'scipy', 'mpmath'],
+      install_requires=['numpy', 'mpmath'],
       python_requires = '>=3.3',
       include_package_data=True, # enable including files with MANIFEST.in
       package_data={'': [lib_file]},