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diff --git a/doc/lispref/compile.texi b/doc/lispref/compile.texi
index 32162c9c22b..212b5a45dc6 100644
--- a/doc/lispref/compile.texi
+++ b/doc/lispref/compile.texi
@@ -524,6 +524,11 @@ one you intend to suppress.
the variable @code{byte-compile-warnings}. See its documentation
string for details.
+@vindex byte-compile-error-on-warn
+ Sometimes you may wish the byte-compiler warnings to be reported
+using @code{error}. If so, set @code{byte-compile-error-on-warn} to a
+non-nil value.
+
@node Byte-Code Objects
@section Byte-Code Function Objects
@cindex compiled function