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-rw-r--r--doc/src/sgml/runtime.sgml2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index 86499c67ac5..08f9fd0b20f 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1342,7 +1342,7 @@ echo -17 > /proc/self/oom_adj
Note that this action must be done as root, or it will have no effect;
so a root-owned startup script is the easiest place to do it. If you
do this, you may also wish to build <productname>PostgreSQL</>
- with <literal>-DLINUX_OOM_ADJ=0</> added to <varname>CFLAGS</>.
+ with <literal>-DLINUX_OOM_ADJ=0</> added to <varname>CPPFLAGS</>.
That will cause postmaster child processes to run with the normal
<varname>oom_adj</> value of zero, so that the OOM killer can still
target them at need.