diff --git a/Makefile b/Makefile
index d475868..c1f6051 100644
--- a/Makefile
+++ b/Makefile
@@ -103,7 +103,7 @@
 
 apidoc:
 	mkdir -p apidoc
-	doxygen doxygen/mbedtls.doxyfile
+	cd doxygen; doxygen mbedtls.doxyfile
 
 apidoc_clean:
 	rm -rf apidoc