diff --git a/src-hxbrief/Main.hs b/src-hxbrief/Main.hs
index 5784d9e..98eaa43 100644
--- a/src-hxbrief/Main.hs
+++ b/src-hxbrief/Main.hs
@@ -541,9 +541,21 @@ main = B.mainFromCmdParser $ do
     ["skip-any"]
     "REGEX"
     (B.flagHelpStr "drop lines containing this pattern, similar to `grep -v`")
-  label       <- B.addFlagStringParams "" ["label"] "STRING" mempty
-  yield       <- B.addFlagStringParams "y" ["yield"] "REGEX" mempty
-  yieldFull   <- B.addFlagStringParams "" ["yield-any"] "REGEX" mempty
+  label <- B.addFlagStringParams "" ["label"] "STRING" mempty
+  yield <- B.addFlagStringParams
+    "y"
+    ["yield"]
+    "REGEX"
+    (B.flagHelpStr
+      "always fully retain lines starting with this pattern, disregarding skip/summarize"
+    )
+  yieldFull <- B.addFlagStringParams
+    ""
+    ["yield-any"]
+    "REGEX"
+    (B.flagHelpStr
+      "always fully retain lines containing this pattern, disregarding skip/summarize"
+    )
   omitSummary <- B.addSimpleBoolFlag "" ["omit-summary"] mempty
   tee         <- B.addFlagStringParams
     ""