diff --git a/packages/babel-generator/src/generators/typescript.js b/packages/babel-generator/src/generators/typescript.js
index c5d737892f2d..68d31f3d43f3 100644
--- a/packages/babel-generator/src/generators/typescript.js
+++ b/packages/babel-generator/src/generators/typescript.js
@@ -67,12 +67,14 @@ export function TSQualifiedName(node) {
 
 export function TSCallSignatureDeclaration(node) {
   this.tsPrintSignatureDeclarationBase(node);
+  this.token(";");
 }
 
 export function TSConstructSignatureDeclaration(node) {
   this.word("new");
   this.space();
   this.tsPrintSignatureDeclarationBase(node);
+  this.token(";");
 }
 
 export function TSPropertySignature(node) {
diff --git a/packages/babel-generator/test/fixtures/typescript/interface-call-signature/input.js b/packages/babel-generator/test/fixtures/typescript/interface-call-signature/input.js
index 5d6b541719ba..738804b2a41d 100644
--- a/packages/babel-generator/test/fixtures/typescript/interface-call-signature/input.js
+++ b/packages/babel-generator/test/fixtures/typescript/interface-call-signature/input.js
@@ -1,3 +1,4 @@
 interface I {
     (x: number): void;
+    (x: string): void;
 }
diff --git a/packages/babel-generator/test/fixtures/typescript/interface-call-signature/output.js b/packages/babel-generator/test/fixtures/typescript/interface-call-signature/output.js
index 90b0b85044b1..df39231079bd 100644
--- a/packages/babel-generator/test/fixtures/typescript/interface-call-signature/output.js
+++ b/packages/babel-generator/test/fixtures/typescript/interface-call-signature/output.js
@@ -1,3 +1,4 @@
 interface I {
-  (x: number): void
-}
\ No newline at end of file
+  (x: number): void;
+  (x: string): void;
+}
diff --git a/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/input.js b/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/input.js
index d726e4c4ed1c..5d05c1fb19a1 100644
--- a/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/input.js
+++ b/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/input.js
@@ -1,3 +1,4 @@
 interface I {
     new (x: number): void;
+    new (x: string): void;
 }
diff --git a/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/output.js b/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/output.js
index 0d29e5753dcf..d7b1fff898af 100644
--- a/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/output.js
+++ b/packages/babel-generator/test/fixtures/typescript/interface-construct-signature/output.js
@@ -1,3 +1,4 @@
 interface I {
-  new (x: number): void
-}
\ No newline at end of file
+  new (x: number): void;
+  new (x: string): void;
+}