diff --git a/completions/_decman b/completions/_decman
index ba201cd..f89861d 100644
--- a/completions/_decman
+++ b/completions/_decman
@@ -6,9 +6,9 @@ _arguments -s \
   '--dry-run[print what would happen as a result of running decman]' \
   '--print[print what would happen as a result of running decman]' \
   '--debug[show debug output]' \
-  '--skip=[skip the following execution steps]:step(s):*' \
-  '--only=[run only the following execution steps]:step(s):*' \
+  '--skip[skip the following execution steps]:step(s):_message -r "step"' \
+  '--only[run only the following execution steps]:step(s):_message -r "step"' \
   '--no-hooks[don'\''t run hook methods for modules]' \
   '--no-color[don'\''t print messages with color]' \
-  '--params=[additional parameters passed to plugins]:param(s):*' \
+  '--params[additional parameters passed to plugins]:param(s):_message -r "param"' \
   '--help[show help]'