diff --git a/include/internal/catch_assertionresult.cpp b/include/internal/catch_assertionresult.cpp
index 4ce07187..8f505d04 100644
--- a/include/internal/catch_assertionresult.cpp
+++ b/include/internal/catch_assertionresult.cpp
@@ -45,7 +45,7 @@ namespace Catch {
     }
 
     bool AssertionResult::hasExpression() const {
-        return m_info.capturedExpression[0] != 0;
+        return !m_info.capturedExpression.empty();
     }
 
     bool AssertionResult::hasMessage() const {