diff --git a/src/DynareBison.yy b/src/DynareBison.yy
index a679f333a16b3ac1c558a5b2a38192d59088b48b..74e71be3b14dc16352ed10fa7a0fa1c7564a61ba 100644
--- a/src/DynareBison.yy
+++ b/src/DynareBison.yy
@@ -1366,7 +1366,7 @@ mshocks : MSHOCKS ';' mshock_list END ';'
           { driver.end_mshocks(false, false); }
         | MSHOCKS '(' mshocks_options_list ')' ';' mshock_list END ';'
           {
-            /* NB: the following relies of the fact that bool is the first
+            /* NB: the following relies on the fact that bool is the first
                alternative in the variant, so that default initialization of the
                variant by the [] operator will give false */
             if ($3.contains("learnt_in"))