diff --git a/contrib/chg/Makefile b/contrib/chg/Makefile
--- a/contrib/chg/Makefile
+++ b/contrib/chg/Makefile
@@ -7,6 +7,9 @@ OBJS = $(SRCS:.c=.o)
 CFLAGS ?= -O2 -Wall -Wextra -pedantic -g
 CPPFLAGS ?= -D_FORTIFY_SOURCE=2
 override CFLAGS += -std=gnu99
+ifdef HGPATH
+override CPPFLAGS += -DHGPATH=\"$(HGPATH)\"
+endif
 
 DESTDIR =
 PREFIX = /usr/local
diff --git a/contrib/chg/chg.c b/contrib/chg/chg.c
--- a/contrib/chg/chg.c
+++ b/contrib/chg/chg.c
@@ -194,7 +194,11 @@ static const char *gethgcmd(void)
 		if (!hgcmd || hgcmd[0] == '\0')
 			hgcmd = getenv("HG");
 		if (!hgcmd || hgcmd[0] == '\0')
+#ifdef HGPATH
+			hgcmd = (HGPATH);
+#else
 			hgcmd = "hg";
+#endif
 	}
 	return hgcmd;
 }