diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97c7d6752..bf4d78ba2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,7 +96,7 @@ ecbuild_add_option( FEATURE MEMFS
     DESCRIPTION "Memory based access to definitions/samples"
     DEFAULT OFF
     CONDITION EC_HAVE_FMEMOPEN OR EC_HAVE_FUNOPEN
-    REQUIRED_PACKAGES "PythonInterp VERSION 2.6"
+    REQUIRED_PACKAGES PythonInterp
 )
 
 #if( HAVE_MEMFS AND "${CMAKE_C_COMPILER_ID}" STREQUAL "Cray")