diff --git a/xml/chapter2/section2/subsection3.xml b/xml/chapter2/section2/subsection3.xml
index 3331fe549..2db0d0309 100644
--- a/xml/chapter2/section2/subsection3.xml
+++ b/xml/chapter2/section2/subsection3.xml
@@ -1451,7 +1451,7 @@ function matrix_times_vector(m, v) {
 function transpose(mat) {
     return accumulate_n(<METAPHRASE>??</METAPHRASE>, <METAPHRASE>??</METAPHRASE>, mat);
 }
-function matrix_times_matrix(n, m) {
+function matrix_times_matrix(m, n) {
     const cols = transpose(n);
     return map(<METAPHRASE>??</METAPHRASE>, m);
 }