diff --git a/Makefile b/Makefile
index 0c13b826f..74389beee 100755
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ spectral:
 
 .PHONY : marc
 marc:
-	@./installation/mods_Marc/apply_DAMASK_modifcations.py ${MAKEFLAGS}
+	@./installation/mods_Marc/apply_DAMASK_modifcations.sh ${MAKEFLAGS}
 
 .PHONY : processing
 processing:
diff --git a/installation/mods_MarcMentat/apply_DAMASK_modifications.py b/installation/mods_MarcMentat/apply_DAMASK_modifications.sh
similarity index 100%
rename from installation/mods_MarcMentat/apply_DAMASK_modifications.py
rename to installation/mods_MarcMentat/apply_DAMASK_modifications.sh