diff --git a/doc/matrix_proxy.htm b/doc/matrix_proxy.htm
index aaacd654..77acb906 100644
--- a/doc/matrix_proxy.htm
+++ b/doc/matrix_proxy.htm
@@ -274,7 +274,7 @@ int main () {
 <h4>Model of</h4>
 <p><a href="expression_concept.htm#vector_expression">Vector Expression</a>
 .</p>
-<p>If the specified row falls outside that of the column index
+<p>If the specified column falls outside that of the column index
 range of the matrix, then the <code>matrix_column</code> is not a
 well formed Vector Expression. That is, access to an element which
 is outside of the matrix is <i>undefined</i>.</p>