--- mono/mini/Makefile.am.in.orig	2018-04-13 23:37:57 UTC
+++ mono/mini/Makefile.am.in
@@ -698,7 +698,7 @@ MemoryIntrinsics.dll: MemoryIntrinsics.i
 
 GENMDESC_OPTS=
 
-GENMDESC_PRG=python $(srcdir)/genmdesc.py $(target_define) $(srcdir)
+GENMDESC_PRG=$(srcdir)/genmdesc.py $(target_define) $(srcdir)
 
 cpu-wasm.h: cpu-wasm.md
 	$(GENMDESC_PRG) cpu-wasm.h wasm_desc $(srcdir)/cpu-wasm.md