2 files changed, 9 insertions, 3 deletions
diff --git a/test/command/6620.md b/test/command/6620.md
index b19cd1972..e448ca6b5 100644
--- a/test/command/6620.md
+++ b/test/command/6620.md
@@ -9,13 +9,10 @@
 \SI{12.3(60)}{\m}
 
 \SI{10.0 \pm 3.3}{\ms}
-
-\SI{10.0 +- 3.3}{\ms}
 ^D
 <p>23 ± 2 m</p>
 <p>125 ± 12 m</p>
 <p>0.135 ± 0.021 m</p>
 <p>12.3 ± 6 m</p>
 <p>10.0 ± 3.3 ms</p>
-<p>10.0 ± 3.3 ms</p>
 ```
diff --git a/test/command/6658.md b/test/command/6658.md
new file mode 100644
index 000000000..bcd174465
--- /dev/null
+++ b/test/command/6658.md
@@ -0,0 +1,9 @@
+```
+pandoc -f latex
+\SI{10.0 +- 3.3}{\ms}
+
+\num{.3e45}
+^D
+<p>10.0 ± 3.3 ms</p>
+<p>0.3 × 10<sup>45</sup></p>
+```