diff --git a/mk/python.mk b/mk/python.mk
index d325f82..0b37fe2 100644
--- a/mk/python.mk
+++ b/mk/python.mk
@@ -8,5 +8,5 @@ endif
 PY_CHECK_MOD_IOTA := $(shell $(PYTHON) -c "import iota" 2>/dev/null && \
                        echo 1 || echo 0)
 ifneq ("$(PY_CHECK_MOD_IOTA)","1")
-    $(error "skip $@ because PyOTA is not installed.")
+    $(error "dependency error $@ because PyOTA is not installed, to install the latest version: pip install pyota")
 endif