diff --git a/headless-services/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenBuilder.java b/headless-services/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenBuilder.java
index dea05bf8f..9f80d3687 100644
--- a/headless-services/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenBuilder.java
+++ b/headless-services/commons/commons-maven/src/main/java/org/springframework/ide/vscode/commons/maven/MavenBuilder.java
@@ -40,6 +40,8 @@ public class MavenBuilder {
 		ExternalProcess process = new ExternalProcess(projectPath.toFile(),
 				new ExternalCommand(all.toArray(new String[all.size()])), true);
 		if (process.getExitValue() != 0) {
+			System.err.println("Failed to build test project!");
+			System.err.println(process);
 			throw new RuntimeException("Failed to build test project! " + process);
 		}
 	}