diff --git a/test/test_optional_arguments.cpp b/test/test_optional_arguments.cpp
index 262cc6f..e0961a6 100644
--- a/test/test_optional_arguments.cpp
+++ b/test/test_optional_arguments.cpp
@@ -88,10 +88,10 @@ TEST_CASE("Parse optional arguments of many values" *
     program.add_argument("-i").remaining().scan<'i', int>();
 
     WHEN("provided no argument") {
-      THEN("the program accepts it and gets empty container") {
+      THEN("the program accepts it bug gets nothing") {
         REQUIRE_NOTHROW(program.parse_args({"test"}));
-        auto inputs = program.get<std::vector<int>>("-i");
-        REQUIRE(inputs.size() == 0);
+        REQUIRE_THROWS_AS(program.get<std::vector<int>>("-i"),
+                          std::logic_error);
       }
     }
 
diff --git a/test/test_positional_arguments.cpp b/test/test_positional_arguments.cpp
index 6a7a6cb..c3c5b93 100644
--- a/test/test_positional_arguments.cpp
+++ b/test/test_positional_arguments.cpp
@@ -193,11 +193,10 @@ TEST_CASE("Parse remaining arguments deemed positional" *
     program.add_argument("input").remaining();
 
     WHEN("provided no argument") {
-      THEN("the program accepts it and gets empty container") {
+      THEN("the program accepts it but gets nothing") {
         REQUIRE_NOTHROW(program.parse_args({"test"}));
-
-        auto inputs = program.get<std::vector<std::string>>("input");
-        REQUIRE(inputs.size() == 0);
+        REQUIRE_THROWS_AS(program.get<std::vector<std::string>>("input"),
+                          std::logic_error);
       }
     }