diff --git a/src/app/parser.rs b/src/app/parser.rs
index 77e4029cad7..cb5725be43e 100644
--- a/src/app/parser.rs
+++ b/src/app/parser.rs
@@ -1255,6 +1255,10 @@ impl<'a, 'b> Parser<'a, 'b>
                     for v in val.split(delim as u32 as u8) {
                         ret = try!(self.add_single_val_to_arg(arg, v, matcher));
                     }
+                    // If there was a delimiter used, we're not looking for more values
+                    if val.contains_byte(delim as u32 as u8) {
+                        ret = None;
+                    }
                 }
             } else {
                 ret = try!(self.add_single_val_to_arg(arg, val, matcher));