diff --git a/p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/RemoteArtifactRepositoryManagerAgentFactory.java b/p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/RemoteArtifactRepositoryManagerAgentFactory.java
index a9f7f23c72..0fbf24d22e 100644
--- a/p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/RemoteArtifactRepositoryManagerAgentFactory.java
+++ b/p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/RemoteArtifactRepositoryManagerAgentFactory.java
@@ -59,7 +59,7 @@ private boolean getDisableP2MirrorsConfiguration() {
 			return Boolean.parseBoolean(deprecatedValue);
 		}
 
-		String key = "eclipse.p2.mirrors ";
+		String key = "eclipse.p2.mirrors";
 		String value = getMirrorProperty(key);
 
 		if (value != null) {