diff --git a/src/syntax/parser.rs b/src/syntax/parser.rs
index 5fc9ec263..7d057ab9c 100644
--- a/src/syntax/parser.rs
+++ b/src/syntax/parser.rs
@@ -307,6 +307,12 @@ fn math_expr_prec(p: &mut Parser, min_prec: usize, stop: SyntaxKind) {
     }
 
     while !p.eof() && !p.at(stop) {
+        if p.directly_at(SyntaxKind::Text) && p.current_text() == "!" {
+            p.eat();
+            p.wrap(m, SyntaxKind::Math);
+            continue;
+        }
+
         let Some((kind, stop, assoc, mut prec)) = math_op(p.current()) else {
             break;
         };
diff --git a/tests/ref/math/frac.png b/tests/ref/math/frac.png
index 6f0e81395..a116c876a 100644
Binary files a/tests/ref/math/frac.png and b/tests/ref/math/frac.png differ
diff --git a/tests/typ/math/frac.typ b/tests/typ/math/frac.typ
index 15b5da33e..dc120ec3c 100644
--- a/tests/typ/math/frac.typ
+++ b/tests/typ/math/frac.typ
@@ -30,4 +30,5 @@ $ a_1/b_2, 1/f(x), zeta(x)/2, "foo"[|x|]/2 \
   1.2/3.7, 2.3^3.4 \
   🏳️‍🌈[x]/2, f [x]/2, phi [x]/2, 🏳️‍🌈 [x]/2 \
   +[x]/2, 1(x)/2, 2[x]/2 \
-  (a)b/2, b(a)[b]/2 $
+  (a)b/2, b(a)[b]/2 \
+  n!/2, 5!/2, n !/2, 1/n!, 1/5! $