diff --git a/wps_scripts/.gitignore b/wps_scripts/.gitignore
index 53fe082dc..33e48f09a 100644
--- a/wps_scripts/.gitignore
+++ b/wps_scripts/.gitignore
@@ -2,4 +2,5 @@ out/
 .gradle
 build/
 .idea
-dependencies/
\ No newline at end of file
+dependencies/
+lib/
\ No newline at end of file
diff --git a/wps_scripts/src/main/groovy/org/noise_planet/noisemodelling/wps/NoiseModelling/Noise_level_from_source.groovy b/wps_scripts/src/main/groovy/org/noise_planet/noisemodelling/wps/NoiseModelling/Noise_level_from_source.groovy
index 78b7af117..a87bad5e3 100644
--- a/wps_scripts/src/main/groovy/org/noise_planet/noisemodelling/wps/NoiseModelling/Noise_level_from_source.groovy
+++ b/wps_scripts/src/main/groovy/org/noise_planet/noisemodelling/wps/NoiseModelling/Noise_level_from_source.groovy
@@ -588,7 +588,7 @@ def exec(Connection connection, input) {
     String kmlFileNamePrepend = ""
     if (input['confRaysName'] && !((input['confRaysName'] as String).isEmpty())) {
         String confRaysName = input['confRaysName'] as String
-        if(confRaysName.startsWith("file:")) {
+        if(confRaysName.toLowerCase().startsWith("file:")) {
             ldenConfig.setExportRaysMethod(LDENConfig.ExportRaysMethods.TO_MEMORY)
             URL url = new URL(confRaysName)
             File urlFile = new File(url.toURI())
@@ -596,9 +596,9 @@ def exec(Connection connection, input) {
                 folderExportKML = urlFile
             } else {
                 folderExportKML = urlFile.getParentFile()
-                kmlFileNamePrepend = confRaysName.substring(
-                        Math.max(0, confRaysName.lastIndexOf(File.separator) + 1),
-                        Math.max(0, confRaysName.lastIndexOf(".")))
+                String fileName = urlFile.getName()
+                int positionExt = fileName.lastIndexOf(".")
+                kmlFileNamePrepend = fileName.substring(0, positionExt > 0 ? positionExt : fileName.length())
             }
         } else {
             ldenConfig.setExportRaysMethod(LDENConfig.ExportRaysMethods.TO_RAYS_TABLE)