1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 80bb6b3..13074ae 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ out/%: src/%
 	@printf 'CP\t%s\n' "$@"
 
 out/%.html: src/%.html ${includes} src/style.css
-	@m4 -P ${foreach dir,${^D},-I${dir}} include/lib.m4 $< >$@
+	@PATH="$$PATH:./include" m4 -P ${foreach dir,${^D},-I${dir}} include/lib.m4 $< >$@
 	@printf 'M4\t%s\n' "$@"
 
 src/srp/fw-ec/index.html: ${call gendeps,src/srp/fw-ec}