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-rw-r--r--doc/user/intr.t2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/user/intr.t b/doc/user/intr.t
index 722eb8110c..29f652a703 100644
--- a/doc/user/intr.t
+++ b/doc/user/intr.t
@@ -315,7 +315,7 @@ procedure Interrupt_Catch (
@subheading DIRECTIVE STATUS CODES:
@code{SUCCESSFUL} - ISR established successfully@*
@code{INVALID_NUMBER} - illegal vector number@*
-@code{INVALID_ADDRESS} - illegal ISR entry point
+@code{INVALID_ADDRESS} - illegal ISR entry point or invalid old_isr_handler
@subheading DESCRIPTION: