diff --git a/Makefile b/Makefile
index 1b5a05c..f75d867 100644
--- a/Makefile
+++ b/Makefile
@@ -92,17 +92,17 @@ generate-convention-report:
 #Example how to run transformation commands :
 # make owl-core XMI_INPUT_FILE_PATH=/home/mypc/work/model2owl/eNotice_CM.xml OUTPUT_FOLDER_PATH=./my-folder
 owl-core:
-	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/owl-core.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-core.owl.rdf
+	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/owl-core.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_core.owl.rdf
 	@echo Output owl core file:
-	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-core.owl.rdf
+	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_core.owl.rdf
 owl-restrictions:
-	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/owl-restrictions.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-restrictions.owl.rdf
+	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/owl-restrictions.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_restrictions.owl.rdf
     @echo Output owl restrictions file:
-	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-restrictions.owl.rdf
+	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_restrictions.owl.rdf
 shacl:
-	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/shacl-shapes.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-shapes.shacl.rdf
+	@java -jar ${SAXON} -s:${XMI_INPUT_FILE_PATH} -xsl:${MODEL2OWL_FOLDER}/src/shacl-shapes.xsl -o:${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_shapes.shacl.rdf
 	@echo Output shacl file location:
-	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}-shapes.shacl.rdf
+	@ls -lh ${OUTPUT_FOLDER_PATH}/${XMI_INPUT_FILENAME_WITHOUT_EXTENSION}_shapes.shacl.rdf
 
 
 # Combine xmi UML files