diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa5aff0..544aeae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -149,6 +149,7 @@ if(RDK_BUILD_PYTHON_WRAPPERS)
     message("Python Install directory ${PYTHON_INSTDIR}")
     install(DIRECTORY rdkit DESTINATION ${PYTHON_INSTDIR}
       COMPONENT python
+      PATTERN "sping" EXCLUDE
       PATTERN ".svn" EXCLUDE
       PATTERN "test_data" EXCLUDE
       PATTERN "testData" EXCLUDE