diff --git a/src/printer.js b/src/printer.js
index 9c005ebb9..99695f4b7 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -2414,7 +2414,8 @@ function genericPrintNoParens(path, options, print, args) {
         // declare global { ... }
         const isGlobalDeclaration = n.name.type === "Identifier" &&
           n.name.name === "global" &&
-            n.modifiers.some(modifier => modifier.type === "TSDeclareKeyword");
+            n.modifiers &&
+              n.modifiers.some(modifier => modifier.type === "TSDeclareKeyword");
 
         if (!isGlobalDeclaration) {
           parts.push(isExternalModule ? "module " : "namespace ");
diff --git a/tests/typescript/compiler/__snapshots__/jsfmt.spec.js.snap b/tests/typescript/compiler/__snapshots__/jsfmt.spec.js.snap
index 1b16b7d9d..d6f6fdf1b 100644
--- a/tests/typescript/compiler/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/typescript/compiler/__snapshots__/jsfmt.spec.js.snap
@@ -238,6 +238,42 @@ interface C {
 
 `;
 
+exports[`globalIsContextualKeyword.ts 1`] = `
+function a() {
+    let global = 1;
+}
+function b() {
+    class global {}
+}
+
+namespace global {
+}
+
+function foo(global: number) {
+}
+
+let obj = {
+    global: "123"
+}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+function a() {
+  let global = 1;
+}
+function b() {
+  class global {}
+}
+
+namespace global {
+
+}
+
+function foo(global: number) {}
+
+let obj = {
+  global: "123"
+};
+
+`;
+
 exports[`indexSignatureWithInitializer.ts 1`] = `
 // These used to be indexers, now they are computed properties
 interface I {
diff --git a/tests/typescript/compiler/globalIsContextualKeyword.ts b/tests/typescript/compiler/globalIsContextualKeyword.ts
new file mode 100644
index 000000000..ceae834a2
--- /dev/null
+++ b/tests/typescript/compiler/globalIsContextualKeyword.ts
@@ -0,0 +1,16 @@
+function a() {
+    let global = 1;
+}
+function b() {
+    class global {}
+}
+
+namespace global {
+}
+
+function foo(global: number) {
+}
+
+let obj = {
+    global: "123"
+}
\ No newline at end of file