diff --git a/src/main/java/com/diffplug/gradle/eclipserunner/EclipseApp.java b/src/main/java/com/diffplug/gradle/eclipserunner/EclipseApp.java
index 0160d57c9..f328dd912 100644
--- a/src/main/java/com/diffplug/gradle/eclipserunner/EclipseApp.java
+++ b/src/main/java/com/diffplug/gradle/eclipserunner/EclipseApp.java
@@ -92,6 +92,7 @@ public class EclipseApp {
 	 * such as `org.eclipse.ant.core.antRunner` or `org.eclipse.equinox.p2.director`
 	 */
 	public EclipseApp(String application) {
+		addArg("-launcher.suppressErrors");
 		addArg("application", application);
 	}
 
diff --git a/src/main/java/com/diffplug/gradle/eclipserunner/EquinoxLauncher.java b/src/main/java/com/diffplug/gradle/eclipserunner/EquinoxLauncher.java
index 9c498fe91..325cd2e95 100644
--- a/src/main/java/com/diffplug/gradle/eclipserunner/EquinoxLauncher.java
+++ b/src/main/java/com/diffplug/gradle/eclipserunner/EquinoxLauncher.java
@@ -15,6 +15,8 @@
  */
 package com.diffplug.gradle.eclipserunner;
 
+import static java.util.stream.Collectors.toList;
+
 import java.io.File;
 import java.util.HashMap;
 import java.util.List;
@@ -22,6 +24,7 @@
 import java.util.Objects;
 import java.util.SortedSet;
 import java.util.function.BiConsumer;
+import java.util.stream.Collectors;
 
 import org.eclipse.core.runtime.adaptor.EclipseStarter;
 import org.osgi.framework.BundleContext;
@@ -107,7 +110,12 @@ private File getPluginRequireSingle(String name) {
 
 	/** Sets the application arguments which will be passed to the runtime. */
 	public EquinoxLauncher setArgs(List<String> args) {
-		this.args = ImmutableList.copyOf(args);
+		// Filter --launcher.suppressErrors
+		List<String> filteredArgs = args.stream()
+				.filter(Objects::nonNull)
+				.filter(arg -> !arg.equals("--launcher.suppressErrors"))
+				.collect(toList());
+		this.args = ImmutableList.copyOf(filteredArgs);
 		return this;
 	}
 
diff --git a/src/test/java/com/diffplug/gradle/eclipserunner/EclipseAppTest.java b/src/test/java/com/diffplug/gradle/eclipserunner/EclipseAppTest.java
index 9a9d04274..8dd4bfd75 100644
--- a/src/test/java/com/diffplug/gradle/eclipserunner/EclipseAppTest.java
+++ b/src/test/java/com/diffplug/gradle/eclipserunner/EclipseAppTest.java
@@ -31,8 +31,8 @@ public void test() {
 		app.addArg("prop", "a");
 		app.addArg("prop", "b");
 		app.addArg("flag");
-		Assert.assertEquals("-application diffplug -prop a,b -flag", Joiner.on(" ").join(app.toArgList()));
-		Assert.assertEquals("-application diffplug\n-prop a,b\n-flag\n", app.toString());
+		Assert.assertEquals("--launcher.suppressErrors -application diffplug -prop a,b -flag", Joiner.on(" ").join(app.toArgList()));
+		Assert.assertEquals("--launcher.suppressErrors\n-application diffplug\n-prop a,b\n-flag\n", app.toString());
 	}
 
 	@Test
@@ -41,7 +41,7 @@ public void testDoubleAdd() {
 		app.addArg("flag");
 		app.addArg("flag");
 		app.addArg("flag");
-		Assert.assertEquals("-application diffplug -flag", Joiner.on(" ").join(app.toArgList()));
+		Assert.assertEquals("--launcher.suppressErrors -application diffplug -flag", Joiner.on(" ").join(app.toArgList()));
 	}
 
 	@SuppressWarnings("unchecked")
@@ -53,13 +53,14 @@ public void testAnt() {
 		task.attributes().put("prop", "propvalue");
 		ant.setTask(task);
 
-		Assert.assertEquals("-application org.eclipse.ant.core.antRunner -Dkey=value", Joiner.on(" ").join(ant.toArgList()));
+		Assert.assertEquals("--launcher.suppressErrors -application org.eclipse.ant.core.antRunner -Dkey=value", Joiner.on(" ").join(ant.toArgList()));
 		Assert.assertEquals(StringPrinter.buildStringFromLines(
 				"<?xml version=\"1.0\" encoding=\"UTF-8\"?><project>",
 				"  <anttask prop=\"propvalue\"/>",
 				"</project>"), ant.buildXml());
 		Assert.assertEquals(StringPrinter.buildStringFromLines(
 				"### ARGS ###",
+				"--launcher.suppressErrors",
 				"-application org.eclipse.ant.core.antRunner",
 				"-Dkey=value",
 				"",
diff --git a/src/test/java/com/diffplug/gradle/p2/P2ModelTest.java b/src/test/java/com/diffplug/gradle/p2/P2ModelTest.java
index c75f56565..66eed12f1 100644
--- a/src/test/java/com/diffplug/gradle/p2/P2ModelTest.java
+++ b/src/test/java/com/diffplug/gradle/p2/P2ModelTest.java
@@ -39,6 +39,7 @@ public void testDirectorArgs() {
 		File dest = new File("dest");
 		String actual = testData().directorApp(dest, "profile").completeState();
 		String expected = StringPrinter.buildStringFromLines(
+				"--launcher.suppressErrors",
 				"-application org.eclipse.equinox.p2.director",
 				"-clean",
 				"-consolelog",
@@ -57,6 +58,7 @@ public void testMirrorAntFile() {
 		String actual = testData().mirrorApp(dest).completeState();
 		String expected = StringPrinter.buildStringFromLines(
 				"### ARGS ###",
+				"--launcher.suppressErrors",
 				"-application org.eclipse.ant.core.antRunner",
 				"",
 				"### BUILD.XML ###",
@@ -85,6 +87,7 @@ public void testMirrorAntFileWithSlicingOptions() {
 		String actual = p2.mirrorApp(dest).completeState();
 		String expected = StringPrinter.buildStringFromLines(
 				"### ARGS ###",
+				"--launcher.suppressErrors",
 				"-application org.eclipse.ant.core.antRunner",
 				"",
 				"### BUILD.XML ###",
@@ -112,6 +115,7 @@ public void testMirrorAntFileWithAppend() {
 		String actual = p2.mirrorApp(dest).completeState();
 		String expected = StringPrinter.buildStringFromLines(
 				"### ARGS ###",
+				"--launcher.suppressErrors",
 				"-application org.eclipse.ant.core.antRunner",
 				"",
 				"### BUILD.XML ###",
@@ -137,6 +141,7 @@ public void testMirrorAntFileWithAppendDefault() {
 		String actual = p2.mirrorApp(dest).completeState();
 		String expected = StringPrinter.buildStringFromLines(
 				"### ARGS ###",
+				"--launcher.suppressErrors",
 				"-application org.eclipse.ant.core.antRunner",
 				"",
 				"### BUILD.XML ###",