diff --git a/syntax/makefile.nanorc b/syntax/makefile.nanorc
index 4676473d..96bf3557 100644
--- a/syntax/makefile.nanorc
+++ b/syntax/makefile.nanorc
@@ -1,6 +1,6 @@
 ## Here is an example for Makefiles.
 
-syntax makefile "(Makefile[^/]*$|\.(make|mk)$)"
+syntax makefile "(/((GNU)?m|M)akefile[^/]*$|\.(make|mk)$)"
 magic "makefile script"
 comment "#"