diff --git a/processor/src/main/java/org/bsc/maven/plugin/processor/AbstractAnnotationProcessorMojo.java b/processor/src/main/java/org/bsc/maven/plugin/processor/AbstractAnnotationProcessorMojo.java
index 2be7477..a999b0c 100644
--- a/processor/src/main/java/org/bsc/maven/plugin/processor/AbstractAnnotationProcessorMojo.java
+++ b/processor/src/main/java/org/bsc/maven/plugin/processor/AbstractAnnotationProcessorMojo.java
@@ -1048,6 +1048,6 @@ private Optional<List<String>> resolveProcessorPathEntries() {
   protected Optional<String> buildProcessorPath()  {
     return this.resolveProcessorPathEntries()
             .flatMap( artifactPaths ->
-                    Optional.of(artifactPaths.stream().collect(Collectors.joining(File.separator))) );
+                    Optional.of(artifactPaths.stream().collect(Collectors.joining(File.pathSeparator))) );
   }
 }