diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 3760dd6a19f..a272ac15e72 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -16406,7 +16406,7 @@ namespace ts {
         function isPotentiallyUncalledDecorator(decorator: Decorator, signatures: Signature[]) {
             return signatures.length && every(signatures, signature =>
                 signature.minArgumentCount === 0 &&
-                signature.parameters.length < getEffectiveArgumentCount(decorator, /*args*/ undefined, signature))
+                signature.parameters.length < getEffectiveArgumentCount(decorator, /*args*/ undefined, signature));
         }
 
         /**
diff --git a/tests/baselines/reference/decoratorOnClassMethod6.errors.txt b/tests/baselines/reference/decoratorOnClassMethod6.errors.txt
index ab09a01f19b..befe582025c 100644
--- a/tests/baselines/reference/decoratorOnClassMethod6.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassMethod6.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/decorators/class/method/decoratorOnClassMethod6.ts(4,5): error TS1329: A decorator function must accept some number of arguments, but this expression takes none. Did you mean to call it first?
+tests/cases/conformance/decorators/class/method/decoratorOnClassMethod6.ts(4,5): error TS1329: This function cannot be used as a decorator. Did you mean to call it first?
 
 
 ==== tests/cases/conformance/decorators/class/method/decoratorOnClassMethod6.ts (1 errors) ====
@@ -7,5 +7,5 @@ tests/cases/conformance/decorators/class/method/decoratorOnClassMethod6.ts(4,5):
     class C {
         @dec ["method"]() {}
         ~~~~
-!!! error TS1329: A decorator function must accept some number of arguments, but this expression takes none. Did you mean to call it first?
+!!! error TS1329: This function cannot be used as a decorator. Did you mean to call it first?
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClassProperty11.errors.txt b/tests/baselines/reference/decoratorOnClassProperty11.errors.txt
index 8e778300aa6..771ca46b572 100644
--- a/tests/baselines/reference/decoratorOnClassProperty11.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassProperty11.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/decorators/class/property/decoratorOnClassProperty11.ts(4,5): error TS1329: A decorator function must accept some number of arguments, but this expression takes none. Did you mean to call it first?
+tests/cases/conformance/decorators/class/property/decoratorOnClassProperty11.ts(4,5): error TS1329: This function cannot be used as a decorator. Did you mean to call it first?
 
 
 ==== tests/cases/conformance/decorators/class/property/decoratorOnClassProperty11.ts (1 errors) ====
@@ -7,5 +7,5 @@ tests/cases/conformance/decorators/class/property/decoratorOnClassProperty11.ts(
     class C {
         @dec prop;
         ~~~~
-!!! error TS1329: A decorator function must accept some number of arguments, but this expression takes none. Did you mean to call it first?
+!!! error TS1329: This function cannot be used as a decorator. Did you mean to call it first?
     }
\ No newline at end of file