diff --git a/d2compiler/compile_test.go b/d2compiler/compile_test.go
index 8e284f6b6..91699de5b 100644
--- a/d2compiler/compile_test.go
+++ b/d2compiler/compile_test.go
@@ -2221,6 +2221,30 @@ layers: {
 }`,
 			expErr: `d2/testdata/d2compiler/TestCompile/link-board-underscore-not-found.d2:7:9: invalid underscore usage`,
 		},
+		{
+			name: "border-radius-negative",
+			text: `x
+x: {
+  style.border-radius: -1
+}`,
+			expErr: `d2/testdata/d2compiler/TestCompile/border-radius-negative.d2:3:24: expected "border-radius" to be a number between 0 and 20`,
+		},
+		{
+			name: "border-radius-more-than-20",
+			text: `x
+x: {
+  style.border-radius: 21
+}`,
+			expErr: `d2/testdata/d2compiler/TestCompile/border-radius-more-than-20.d2:3:24: expected "border-radius" to be a number between 0 and 20`,
+		},
+		{
+			name: "border-radius-more-than-100-percent",
+			text: `x
+x: {
+  style.border-radius: 1.5
+}`,
+			expErr: `d2/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.d2:3:24: expected "border-radius" to be an integer if greater than 1`,
+		},
 	}
 
 	for _, tc := range testCases {
diff --git a/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.exp.json b/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.exp.json
new file mode 100644
index 000000000..604c3015b
--- /dev/null
+++ b/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.exp.json
@@ -0,0 +1,12 @@
+{
+  "graph": null,
+  "err": {
+    "ioerr": null,
+    "errs": [
+      {
+        "range": "d2/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.d2,2:23:30-2:26:33",
+        "errmsg": "d2/testdata/d2compiler/TestCompile/border-radius-more-than-100-percent.d2:3:24: expected \"border-radius\" to be an integer if greater than 1"
+      }
+    ]
+  }
+}
diff --git a/testdata/d2compiler/TestCompile/border-radius-more-than-20.exp.json b/testdata/d2compiler/TestCompile/border-radius-more-than-20.exp.json
new file mode 100644
index 000000000..fd3b9618f
--- /dev/null
+++ b/testdata/d2compiler/TestCompile/border-radius-more-than-20.exp.json
@@ -0,0 +1,12 @@
+{
+  "graph": null,
+  "err": {
+    "ioerr": null,
+    "errs": [
+      {
+        "range": "d2/testdata/d2compiler/TestCompile/border-radius-more-than-20.d2,2:23:30-2:25:32",
+        "errmsg": "d2/testdata/d2compiler/TestCompile/border-radius-more-than-20.d2:3:24: expected \"border-radius\" to be a number between 0 and 20"
+      }
+    ]
+  }
+}
diff --git a/testdata/d2compiler/TestCompile/border-radius-negative.exp.json b/testdata/d2compiler/TestCompile/border-radius-negative.exp.json
new file mode 100644
index 000000000..25584f80a
--- /dev/null
+++ b/testdata/d2compiler/TestCompile/border-radius-negative.exp.json
@@ -0,0 +1,12 @@
+{
+  "graph": null,
+  "err": {
+    "ioerr": null,
+    "errs": [
+      {
+        "range": "d2/testdata/d2compiler/TestCompile/border-radius-negative.d2,2:23:30-2:25:32",
+        "errmsg": "d2/testdata/d2compiler/TestCompile/border-radius-negative.d2:3:24: expected \"border-radius\" to be a number between 0 and 20"
+      }
+    ]
+  }
+}