diff --git a/src/units.typ b/src/units.typ
index 38ec908..97ff194 100644
--- a/src/units.typ
+++ b/src/units.typ
@@ -313,13 +313,14 @@
     sym.wj
     separator
     if not breakable.unit { sym.wj }
-    box(show-unit(
+    show-unit(
       unit.numerator,
       unit.denominator,
       fraction: num-state.unit.fraction,
       unit-separator: num-state.unit.unit-separator,
       math: num-state.math,
-    ))
+      use-sqrt: num-state.unit.use-sqrt
+    )
   }
 
   result
diff --git a/tests/zi/sqrt/.gitignore b/tests/zi/sqrt/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/zi/sqrt/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/zi/sqrt/ref.typ b/tests/zi/sqrt/ref.typ
new file mode 100644
index 0000000..fa69d4e
--- /dev/null
+++ b/tests/zi/sqrt/ref.typ
@@ -0,0 +1,37 @@
+#set page(width: auto, height: auto, margin: .5em)
+
+
+#let th = sym.space.thin
+
+$"K"^(0.5)$ \
+$42th"K"^(0.5)$ \
+$"s"th"K"^(-0.5)$ \
+$42th"s"th"K"^(-0.5)$
+
+$"K"^(0.5)$ \
+$42th"K"^(0.5)$ \
+$"s"\/"K"^(0.5)$ \
+$42th"s"\/"K"^(0.5)$ \
+
+$"K"^(0.5)$ \
+$42th"K"^(0.5)$ \
+$"s"/"K"^(0.5)$ \
+$42th"s"/"K"^(0.5)$ \
+
+#pagebreak()
+
+
+$√"K"$ \
+$42th√"K"$ \
+$"s"th"K"^(-0.5)$ \
+$42th"s"th"K"^(-0.5)$
+
+$√"K"$ \
+$42th√"K"$ \
+$"s"\/√"K"$ \
+$42th"s"\/√"K"$ \
+
+$√"K"$ \
+$42th√"K"$ \
+$"s"/sqrt("K")$ \
+$42th"s"/sqrt("K")$ \
diff --git a/tests/zi/sqrt/test.typ b/tests/zi/sqrt/test.typ
new file mode 100644
index 0000000..663f58d
--- /dev/null
+++ b/tests/zi/sqrt/test.typ
@@ -0,0 +1,43 @@
+#import "/src/zero.typ": *
+
+#set page(width: auto, height: auto, margin: .5em)
+
+
+#let Kroot = zi.declare("K^0.5")
+#let K-root = zi.declare("s/K^0.5")
+
+
+#let sample = [
+  #Kroot() \
+  #Kroot()[42] \
+  #K-root() \
+  #K-root()[42] \
+]
+#set-unit(use-sqrt: false)
+#set-unit(fraction: "power")
+#sample
+
+#set-unit(fraction: "inline")
+#sample
+
+#set-unit(fraction: "fraction")
+#sample
+
+#pagebreak()
+
+
+#set-unit(use-sqrt: true)
+#set-unit(fraction: "power")
+#sample
+
+#set-unit(fraction: "inline")
+#sample
+
+#set-unit(fraction: "fraction")
+#sample
+// $
+//   #kg-K1-2(use-sqrt: false) \
+//   #kg-K1-2(use-sqrt: false, fraction: "inline") \
+//   #kg-K1-2(use-sqrt: false)[42] \
+//   #kg-K1-2(use-sqrt: false, fraction: "inline")[42]
+// $
\ No newline at end of file