diff --git a/CHANGES.md b/CHANGES.md
index b470abd7..f019ce78 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+### Fixed
+- Fix ecj mapping in eclipseMavenCentral ([#158](https://github.com/diffplug/goomph/pull/158))
+
 ## [3.32.1] - 2021-09-09
 
 ### Fixed
diff --git a/src/main/java/com/diffplug/gradle/eclipse/MavenCentralMapping.java b/src/main/java/com/diffplug/gradle/eclipse/MavenCentralMapping.java
index 5fb6054b..e11b32b0 100644
--- a/src/main/java/com/diffplug/gradle/eclipse/MavenCentralMapping.java
+++ b/src/main/java/com/diffplug/gradle/eclipse/MavenCentralMapping.java
@@ -51,7 +51,9 @@ public static boolean isEclipseGroup(String group) {
 
 	/** Returns the MavenCentral groupId:artifactId appropriate for the given bundleId. */
 	public static String groupIdArtifactId(String bundleId) {
-		if (bundleId.startsWith(JDT)) {
+		if ("org.eclipse.jdt.core.compiler.batch".equals(bundleId)) {
+			return JDT + ":ecj";
+		} else if (bundleId.startsWith(JDT)) {
 			return JDT + ":" + bundleId;
 		} else if (bundleId.startsWith(PDE)) {
 			return PDE + ":" + bundleId;