diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 85a099c6dca..70966c48e7c 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -483,7 +483,7 @@ namespace ts {
             }
         },
         {
-            name: "checkJsFiles",
+            name: "checkJs",
             type: "boolean",
             experimental: true,
             description: Diagnostics.Report_errors_in_js_files
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 29559c12191..5fd178a891f 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -906,7 +906,7 @@ namespace ts {
                 const bindDiagnostics = sourceFile.bindDiagnostics;
                 // For JavaScript files, we don't want to report semantic errors unless ecplicitlly requested.
                 const includeCheckDiagnostics = !isSourceFileJavaScript(sourceFile) ||
-                    (sourceFile.checkJsDirective ? sourceFile.checkJsDirective.enabled : options.checkJsFiles);
+                    (sourceFile.checkJsDirective ? sourceFile.checkJsDirective.enabled : options.checkJs);
                 const checkDiagnostics = includeCheckDiagnostics ? typeChecker.getDiagnostics(sourceFile, cancellationToken) : [];
                 const fileProcessingDiagnosticsInFile = fileProcessingDiagnostics.getDiagnostics(sourceFile.fileName);
                 const programDiagnosticsInFile = programDiagnostics.getDiagnostics(sourceFile.fileName);
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index beb68a015b0..7e7fe7c28e4 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -3317,7 +3317,7 @@
         alwaysStrict?: boolean;  // Always combine with strict property
         baseUrl?: string;
         charset?: string;
-        checkJsFiles?: boolean;
+        checkJs?: boolean;
         /* @internal */ configFilePath?: string;
         declaration?: boolean;
         declarationDir?: string;
diff --git a/tests/cases/compiler/checkJsFiles.ts b/tests/cases/compiler/checkJsFiles.ts
index 0f196539737..62e2eb3301d 100644
--- a/tests/cases/compiler/checkJsFiles.ts
+++ b/tests/cases/compiler/checkJsFiles.ts
@@ -1,5 +1,5 @@
 // @allowJs: true
-// @checkJsFiles: true
+// @checkJs: true
 // @noEmit: true
 
 // @fileName: a.js
diff --git a/tests/cases/compiler/checkJsFiles2.ts b/tests/cases/compiler/checkJsFiles2.ts
index e18eecb0393..36bc2cbd255 100644
--- a/tests/cases/compiler/checkJsFiles2.ts
+++ b/tests/cases/compiler/checkJsFiles2.ts
@@ -1,5 +1,5 @@
 // @allowJs: true
-// @checkJsFiles: false
+// @checkJs: false
 // @noEmit: true
 
 // @fileName: a.js
diff --git a/tests/cases/compiler/checkJsFiles4.ts b/tests/cases/compiler/checkJsFiles4.ts
index 364397a3e8a..8bebedf55e7 100644
--- a/tests/cases/compiler/checkJsFiles4.ts
+++ b/tests/cases/compiler/checkJsFiles4.ts
@@ -1,5 +1,5 @@
 // @allowJs: true
-// @checkJsFiles: false
+// @checkJs: false
 // @noEmit: true
 
 // @fileName: a.js
diff --git a/tests/cases/compiler/checkJsFiles5.ts b/tests/cases/compiler/checkJsFiles5.ts
index 572f6b3b5f8..c28114f570b 100644
--- a/tests/cases/compiler/checkJsFiles5.ts
+++ b/tests/cases/compiler/checkJsFiles5.ts
@@ -1,5 +1,5 @@
 // @allowJs: true
-// @checkJsFiles: true
+// @checkJs: true
 // @noEmit: true
 
 // @fileName: a.js