diff --git a/hal/src/main/native/cpp/jni/DigitalGlitchFilterJNI.cpp b/hal/src/main/native/cpp/jni/DigitalGlitchFilterJNI.cpp
index 3e39ac031a..fbbaadb77c 100644
--- a/hal/src/main/native/cpp/jni/DigitalGlitchFilterJNI.cpp
+++ b/hal/src/main/native/cpp/jni/DigitalGlitchFilterJNI.cpp
@@ -1,5 +1,5 @@
 /*----------------------------------------------------------------------------*/
-/* Copyright (c) 2016-2018 FIRST. All Rights Reserved.                        */
+/* Copyright (c) 2016-2019 FIRST. All Rights Reserved.                        */
 /* Open Source Software - may be modified and shared by FRC teams. The code   */
 /* must be accompanied by the FIRST BSD license file in the root directory of */
 /* the project.                                                               */
@@ -13,6 +13,8 @@
 
 using namespace frc;
 
+extern "C" {
+
 /*
  * Class:     edu_wpi_first_hal_DigitalGlitchFilterJNI
  * Method:    setFilterSelect
@@ -76,3 +78,5 @@ Java_edu_wpi_first_hal_DigitalGlitchFilterJNI_getFilterPeriod
   CheckStatus(env, status);
   return result;
 }
+
+}  // extern "C"