diff --git a/NOTICE b/NOTICE
index 14d821345c..148bc0ca87 100644
--- a/NOTICE
+++ b/NOTICE
@@ -62,6 +62,7 @@ under the licensing terms detailed in LICENSE:
 * Kam Chehresa <kaz.che@gmail.com>
 * Mopsgamer <79159094+Mopsgamer@users.noreply.github.com>
 * EDM115 <github@edm115.dev>
+* Weixie Cui <cuiweixie@gmail.com>
 
 Portions of this software are derived from third-party works licensed under
 the following terms:
diff --git a/src/compiler.ts b/src/compiler.ts
index 36f09ab8aa..4b246478eb 100644
--- a/src/compiler.ts
+++ b/src/compiler.ts
@@ -4150,7 +4150,7 @@ export class Compiler extends DiagnosticEmitter {
           rightExpr = this.compileExpression(right, leftType);
           rightType = this.currentType;
           commonType = Type.commonType(leftType, rightType, contextualType);
-          if (!commonType || !leftType.isNumericValue) {
+          if (!commonType || !commonType.isNumericValue) {
             this.error(
               DiagnosticCode.Operator_0_cannot_be_applied_to_types_1_and_2,
               expression.range, "-", leftType.toString(), rightType.toString()