diff --git a/src/parse/matches/matched_arg.rs b/src/parse/matches/matched_arg.rs
index cd06c471..c2d86f44 100644
--- a/src/parse/matches/matched_arg.rs
+++ b/src/parse/matches/matched_arg.rs
@@ -77,7 +77,7 @@ impl MatchedArg {
         self.vals.last().map(|x| x.len()).unwrap_or(0)
     }
 
-    pub(crate) fn is_vals_empty(&self) -> bool {
+    pub(crate) fn all_val_groups_empty(&self) -> bool {
         self.vals.iter().flatten().count() == 0
     }
 
diff --git a/src/parse/parser.rs b/src/parse/parser.rs
index fd6e2243..dd4953c6 100644
--- a/src/parse/parser.rs
+++ b/src/parse/parser.rs
@@ -1638,7 +1638,7 @@ impl<'help, 'app> Parser<'help, 'app> {
                 arg.name
             );
             match matcher.get(&arg.id) {
-                Some(ma) if ma.is_vals_empty() => {
+                Some(ma) if ma.all_val_groups_empty() => {
                     debug!(
                         "Parser::add_value:iter:{}: has no user defined vals",
                         arg.name
diff --git a/src/parse/validator.rs b/src/parse/validator.rs
index 48dd4671..3098b879 100644
--- a/src/parse/validator.rs
+++ b/src/parse/validator.rs
@@ -42,7 +42,7 @@ impl<'help, 'app, 'parser> Validator<'help, 'app, 'parser> {
             let o = &self.p.app[&a];
             reqs_validated = true;
             let should_err = if let Some(v) = matcher.0.args.get(&o.id) {
-                v.is_vals_empty() && !(o.min_vals.is_some() && o.min_vals.unwrap() == 0)
+                v.all_val_groups_empty() && !(o.min_vals.is_some() && o.min_vals.unwrap() == 0)
             } else {
                 true
             };
@@ -396,7 +396,7 @@ impl<'help, 'app, 'parser> Validator<'help, 'app, 'parser> {
         };
         // Issue 665 (https://github.com/clap-rs/clap/issues/665)
         // Issue 1105 (https://github.com/clap-rs/clap/issues/1105)
-        if a.is_set(ArgSettings::TakesValue) && !min_vals_zero && ma.is_vals_empty() {
+        if a.is_set(ArgSettings::TakesValue) && !min_vals_zero && ma.all_val_groups_empty() {
             return Err(Error::empty_value(
                 self.p.app,
                 a,