diff --git a/CMakeLists.txt b/CMakeLists.txt
index ad5cd876204bd9ef1314f18c642db046cbc496a1..f1b7e22ba34c72bd0b4bcf46a0c529ff2f746c48 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ set(CMAKE_C_STANDARD 11)
 
 #set(Python_ADDITIONAL_VERSIONS 3.9 3.8 3.7 3.6 3.5 3.4)
 #find_package (PythonLibs REQUIRED)
-#include_directories(${PYTHON_INCLUDE_DIR} include/)
+include_directories(${PYTHON_INCLUDE_DIR} include/)
 file(GLOB PYTHON_CELLFRAME_SRCS CellFrame/*.c)
 file(GLOB PYTHON_CELLFRAME_HEADERS include/*.h)