diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed18c9fa4a..67f2a9910d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -232,7 +232,7 @@ else ()
   set(MAKE make)
 endif ()
 
-find_package(PythonInterp 2 REQUIRED)
+find_package(PythonInterp 2 EXACT REQUIRED)
 get_filename_component(PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}" REALPATH)
 
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