diff --git a/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/FilterOutputFixture.java b/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/FilterOutputFixture.java
index d91850bfef..8226ae7433 100644
--- a/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/FilterOutputFixture.java
+++ b/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/FilterOutputFixture.java
@@ -26,7 +26,7 @@ public abstract class FilterOutputFixture<T extends PIDSource> implements ITestF
   private boolean m_initialized = false;
   private boolean m_tornDown = false;
   protected T m_filter;
-  private DataWrapper m_data;
+  protected DataWrapper m_data;
   private double m_expectedOutput;
 
   public FilterOutputFixture(double expectedOutput) {
diff --git a/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/test/TestBench.java b/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/test/TestBench.java
index d1148502c1..b27f9d7537 100644
--- a/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/test/TestBench.java
+++ b/wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/test/TestBench.java
@@ -388,8 +388,8 @@ public final class TestBench {
     return new FilterOutputFixture<LinearDigitalFilter>(kSinglePoleIIRExpectedOutput) {
       @Override
       protected LinearDigitalFilter giveFilter() {
-        DataWrapper data = new DataWrapper(getData);
-        return LinearDigitalFilter.singlePoleIIR(data,
+        m_data = new DataWrapper(getData);
+        return LinearDigitalFilter.singlePoleIIR(m_data,
             kSinglePoleIIRTimeConstant,
             kFilterStep);
       }
@@ -405,8 +405,8 @@ public final class TestBench {
     return new FilterOutputFixture<LinearDigitalFilter>(kHighPassExpectedOutput) {
       @Override
       protected LinearDigitalFilter giveFilter() {
-        DataWrapper data = new DataWrapper(getData);
-        return LinearDigitalFilter.highPass(data, kHighPassTimeConstant,
+        m_data = new DataWrapper(getData);
+        return LinearDigitalFilter.highPass(m_data, kHighPassTimeConstant,
             kFilterStep);
       }
     };
@@ -422,8 +422,8 @@ public final class TestBench {
     return new FilterOutputFixture<LinearDigitalFilter>(kMovAvgExpectedOutput) {
       @Override
       protected LinearDigitalFilter giveFilter() {
-        DataWrapper data = new DataWrapper(getData);
-        return LinearDigitalFilter.movingAverage(data, kMovAvgTaps);
+        m_data = new DataWrapper(getData);
+        return LinearDigitalFilter.movingAverage(m_data, kMovAvgTaps);
       }
     };
   }
@@ -438,8 +438,8 @@ public final class TestBench {
     return new FilterOutputFixture<LinearDigitalFilter>(0.0) {
       @Override
       protected LinearDigitalFilter giveFilter() {
-        DataWrapper data = new DataWrapper(getPulseData);
-        return LinearDigitalFilter.movingAverage(data, kMovAvgTaps);
+        m_data = new DataWrapper(getPulseData);
+        return LinearDigitalFilter.movingAverage(m_data, kMovAvgTaps);
       }
     };
   }