diff --git a/contrib/jemalloc-cmake/README b/contrib/jemalloc-cmake/README
index 6e5f841d019..1a7b04d6ecf 100644
--- a/contrib/jemalloc-cmake/README
+++ b/contrib/jemalloc-cmake/README
@@ -1,3 +1,4 @@
 It allows to integrate JEMalloc into CMake project.
 
 - Remove JEMALLOC_HAVE_ATTR_FORMAT_GNU_PRINTF because it's non standard.
+- Added JEMALLOC_CONFIG_MALLOC_CONF substitution
diff --git a/contrib/jemalloc-cmake/include_linux_x86_64/README b/contrib/jemalloc-cmake/include_linux_x86_64/README
index e3438c2d79c..f85d241e90f 100644
--- a/contrib/jemalloc-cmake/include_linux_x86_64/README
+++ b/contrib/jemalloc-cmake/include_linux_x86_64/README
@@ -2,4 +2,3 @@ Here are pre-generated files from jemalloc on Linux x86_64.
 You can obtain these files by running ./autogen.sh inside jemalloc source directory.
 
 Removed JEMALLOC_PURGE_MADVISE_FREE because it's available only from Linux 4.5.
-Added JEMALLOC_CONFIG_MALLOC_CONF substitution