diff --git a/application/argumentparser.cpp b/application/argumentparser.cpp
index 2d551be..b009684 100644
--- a/application/argumentparser.cpp
+++ b/application/argumentparser.cpp
@@ -1320,7 +1320,7 @@ void ArgumentParser::checkConstraints(const ArgumentVector &args)
                 for (const auto &name : arg->m_valueNames) {
                     ss << ' ' << name, ++valueNamesPrint;
                 }
-                if (arg->m_requiredValueCount != static_cast<size_t>(-1)) {
+                if (arg->m_requiredValueCount != Argument::varValueCount) {
                     while (valueNamesPrint < arg->m_requiredValueCount) {
                         ss << "\nvalue " << (++valueNamesPrint);
                     }
diff --git a/application/argumentparser.h b/application/argumentparser.h
index 1990aab..4ae8073 100644
--- a/application/argumentparser.h
+++ b/application/argumentparser.h
@@ -483,7 +483,7 @@ inline void Argument::appendValueName(const char *valueName)
  */
 inline bool Argument::allRequiredValuesPresent(std::size_t occurrence) const
 {
-    return m_requiredValueCount == static_cast<std::size_t>(-1)
+    return m_requiredValueCount == Argument::varValueCount
         || (m_occurrences[occurrence].values.size() >= static_cast<std::size_t>(m_requiredValueCount));
 }