diff --git a/src/model/styles.rs b/src/model/styles.rs
index 334a01b8a..2f33ef929 100644
--- a/src/model/styles.rs
+++ b/src/model/styles.rs
@@ -472,8 +472,10 @@ pub struct ShowableSelector(pub Selector);
 
 impl Cast for ShowableSelector {
     fn is(value: &Value) -> bool {
-        matches!(value, Value::Str(_) | Value::Label(_) | Value::Func(_))
-            || value.type_name() == "regular expression"
+        matches!(
+            value,
+            Value::Symbol(_) | Value::Str(_) | Value::Label(_) | Value::Func(_)
+        ) || value.type_name() == "regular expression"
             || value.type_name() == "selector"
     }
 
@@ -510,6 +512,7 @@ impl Cast for ShowableSelector {
             CastInfo::Type("label"),
             CastInfo::Type("string"),
             CastInfo::Type("regular expression"),
+            CastInfo::Type("symbol"),
             CastInfo::Type("selector"),
         ])
     }
diff --git a/tests/ref/math/style.png b/tests/ref/math/style.png
index f4a42c707..c5e722582 100644
Binary files a/tests/ref/math/style.png and b/tests/ref/math/style.png differ
diff --git a/tests/typ/compiler/show-node.typ b/tests/typ/compiler/show-node.typ
index c69f46bd1..27a4b6a9d 100644
--- a/tests/typ/compiler/show-node.typ
+++ b/tests/typ/compiler/show-node.typ
@@ -96,7 +96,7 @@ Hey
 = Heading
 
 ---
-// Error: 7-10 expected function, label, string, regular expression, or selector, found color
+// Error: 7-10 expected function, label, string, regular expression, symbol, or selector, found color
 #show red: []
 
 ---
diff --git a/tests/typ/math/style.typ b/tests/typ/math/style.typ
index dfb7a7953..67a410aff 100644
--- a/tests/typ/math/style.typ
+++ b/tests/typ/math/style.typ
@@ -28,3 +28,8 @@ $text(#red, "time"^2) + sqrt("place")$
 // Test different font.
 #show math.equation: set text(font: "Fira Math")
 $ v := vec(1 + 2, 2 - 4, sqrt(3), arrow(x)) + 1 $
+
+---
+// Test using rules for symbols
+#show sym.tack: it => $#h(1em) it #h(1em)$
+$ a tack b $