diff --git a/packages/modeling/src/primitives/roundedCuboid.js b/packages/modeling/src/primitives/roundedCuboid.js
index 2fc5bd656..f6fea3a3a 100644
--- a/packages/modeling/src/primitives/roundedCuboid.js
+++ b/packages/modeling/src/primitives/roundedCuboid.js
@@ -151,7 +151,7 @@ export const roundedCuboid = (options) => {
 
   if (roundRadius > (size[0] - EPS) ||
       roundRadius > (size[1] - EPS) ||
-      roundRadius > (size[2] - EPS)) throw new Error('roundRadius must be smaller then the radius of all dimensions')
+      roundRadius > (size[2] - EPS)) throw new Error('roundRadius must be smaller than the radius of all dimensions')
 
   segments = Math.floor(segments / 4)
 
diff --git a/packages/modeling/src/primitives/roundedCylinder.js b/packages/modeling/src/primitives/roundedCylinder.js
index 6e35280a1..294ee3077 100644
--- a/packages/modeling/src/primitives/roundedCylinder.js
+++ b/packages/modeling/src/primitives/roundedCylinder.js
@@ -38,7 +38,7 @@ export const roundedCylinder = (options) => {
   if (!isGTE(height, 0)) throw new Error('height must be positive')
   if (!isGTE(radius, 0)) throw new Error('radius must be positive')
   if (!isGTE(roundRadius, 0)) throw new Error('roundRadius must be positive')
-  if (roundRadius > radius) throw new Error('roundRadius must be smaller then the radius')
+  if (roundRadius > radius) throw new Error('roundRadius must be smaller than the radius')
   if (!isGTE(segments, 4)) throw new Error('segments must be four or more')
 
   // if size is zero return empty geometry
diff --git a/packages/modeling/src/primitives/roundedRectangle.js b/packages/modeling/src/primitives/roundedRectangle.js
index 46a712774..1042c83fc 100644
--- a/packages/modeling/src/primitives/roundedRectangle.js
+++ b/packages/modeling/src/primitives/roundedRectangle.js
@@ -45,7 +45,7 @@ export const roundedRectangle = (options) => {
   size = size.map((v) => v / 2) // convert to radius
 
   if (roundRadius > (size[0] - EPS) ||
-      roundRadius > (size[1] - EPS)) throw new Error('roundRadius must be smaller then the radius of all dimensions')
+      roundRadius > (size[1] - EPS)) throw new Error('roundRadius must be smaller than the radius of all dimensions')
 
   const cornerSegments = Math.floor(segments / 4)