diff --git a/src/operators/sdf2d/roundedRectangleSdf2d.glsl b/src/operators/sdf2d/roundedRectangleSdf2d.glsl
index 7a9b256a7..928773743 100644
--- a/src/operators/sdf2d/roundedRectangleSdf2d.glsl
+++ b/src/operators/sdf2d/roundedRectangleSdf2d.glsl
@@ -7,6 +7,7 @@ ReturnT thismap(CoordT p, ContextT ctx) {
 	#ifdef THIS_HAS_INPUT_roundingField
 	r *= inputOp_roundingField(p, ctx);
 	#endif
+	ROUNDNESS_UNIT_BODY();
 	ReturnT res = createSdf(sdRoundedBox(p, s, r));
 	#ifdef RAYTK_USE_UV
 	assignUV(res, vec3(map01(p, -s/2., s/2.), 0.));
diff --git a/src/operators/sdf2d/roundedRectangleSdf2d.tox b/src/operators/sdf2d/roundedRectangleSdf2d.tox
index ac004f7c3..b1e33ce3b 100644
Binary files a/src/operators/sdf2d/roundedRectangleSdf2d.tox and b/src/operators/sdf2d/roundedRectangleSdf2d.tox differ
diff --git a/src/operators/sdf2d/roundedRectangleSdf2d.yaml b/src/operators/sdf2d/roundedRectangleSdf2d.yaml
index baadcc105..e7b8f4506 100644
--- a/src/operators/sdf2d/roundedRectangleSdf2d.yaml
+++ b/src/operators/sdf2d/roundedRectangleSdf2d.yaml
@@ -1,7 +1,7 @@
 !rop
 meta: !meta
   opType: raytk.operators.sdf2d.roundedRectangleSdf2d
-  opVersion: '8'
+  opVersion: '9'
   opStatus: default
 opDef: !def
   enable: true
@@ -39,3 +39,19 @@ inputs:
   returnType: !returnT
     Returntypefloat: true
     Returntypevec4: true
+elements:
+- !opElement
+  name: codeSwitcher_Roundnessunit
+  elementType: codeSwitcher
+  params:
+    Elementroot: ''
+    Table: !table
+      file: src/operators/sdf2d/roundedRectangleSdf2d_roundnessUnits.txt
+      name: roundnessUnits
+    Param: Roundnessunit
+    Autoupdateparams: true
+    Manageparamstates: false
+    Alwaysincludeallparams: false
+    Switchmode: inline
+    Indexexpr: ''
+    Placeholder: ROUNDNESS_UNIT_BODY();
diff --git a/src/operators/sdf2d/roundedRectangleSdf2d_roundnessUnits.txt b/src/operators/sdf2d/roundedRectangleSdf2d_roundnessUnits.txt
new file mode 100644
index 000000000..1b1ec56cf
--- /dev/null
+++ b/src/operators/sdf2d/roundedRectangleSdf2d_roundnessUnits.txt
@@ -0,0 +1,3 @@
+name	label	code
+dist	Distance	
+ratio	Ratio of Scale	r *= vmin(s);
diff --git a/tests/testCases/operators/sdf2d/roundedRectangleSdf2d_test.tox b/tests/testCases/operators/sdf2d/roundedRectangleSdf2d_test.tox
index 0ebdc2988..106a3d1d4 100644
Binary files a/tests/testCases/operators/sdf2d/roundedRectangleSdf2d_test.tox and b/tests/testCases/operators/sdf2d/roundedRectangleSdf2d_test.tox differ