diff --git a/scripts/west_commands/completion/west-completion.zsh b/scripts/west_commands/completion/west-completion.zsh
index 43c7c0ffc19..b3a881288c0 100644
--- a/scripts/west_commands/completion/west-completion.zsh
+++ b/scripts/west_commands/completion/west-completion.zsh
@@ -300,7 +300,7 @@ _west_spdx() {
   '(-i --init)'{-i,--init}'[initialize CMake file-based API]'
   '(-d --build-dir)'{-d,--build-dir}'[build directory to create or use]:build dir:_directories'
   '(-n --namespace-prefix)'{-n,--namespace-prefix}'[namespace prefix]:namespace prefix:'
-  '(-s --spdx-dir)'{-d,--spdx-dir}'[SPDX output directory]:spdx output dir:_directories'
+  '(-s --spdx-dir)'{-s,--spdx-dir}'[SPDX output directory]:spdx output dir:_directories'
   '--analyze-includes[also analyze included header files]'
   '--include-sdk[also generate SPDX document for SDK]'
   )