diff --git a/plugins/maven/src/main/java/org/jetbrains/idea/maven/execution/MavenExternalParameters.java b/plugins/maven/src/main/java/org/jetbrains/idea/maven/execution/MavenExternalParameters.java
index 6cdad8864b9d..cead52d295af 100644
--- a/plugins/maven/src/main/java/org/jetbrains/idea/maven/execution/MavenExternalParameters.java
+++ b/plugins/maven/src/main/java/org/jetbrains/idea/maven/execution/MavenExternalParameters.java
@@ -138,7 +138,7 @@ public class MavenExternalParameters {
       throw new ExecutionException(RunnerBundle.message("maven.3.3.1.bad.jdk"));
     }
 
-    params.getProgramParametersList().addProperty("idea.version" + MavenUtil.getIdeaVersionToPassToMavenProcess());
+    params.getProgramParametersList().addProperty("idea.version", MavenUtil.getIdeaVersionToPassToMavenProcess());
     if (StringUtil.compareVersionNumbers(mavenVersion, "3.3") >= 0) {
       params.getVMParametersList().addProperty("maven.multiModuleProjectDirectory",
                                                MavenServerUtil.findMavenBasedir(parameters.getWorkingDirFile()).getPath());