diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7c4cd042..0e8de097 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,6 +24,11 @@
         {
           "name": "Test",
           "run": "go test -v ./..."
+        },
+        {
+          "name": "Test on 32bit",
+          "if": "runner.os == 'Linux'",
+          "run": "GOARCH=386 go test -v ./..."
         }
       ]
     }
diff --git a/error_test.go b/error_test.go
index dd147a3b..cd95263c 100644
--- a/error_test.go
+++ b/error_test.go
@@ -122,7 +122,7 @@ func TestParseError(t *testing.T) {
 		},
 		{
 			&struct{ Int int }{},
-			fmt.Sprintf("Int = %d", uint(math.MaxInt64+1)),
+			fmt.Sprintf("Int = %d", uint64(math.MaxInt64+1)),
 			`| toml: error: 9223372036854775808 is out of range for int64
 			 |
 			 | At line 1, column 6-25: