diff --git a/plugins/mysqlx/Makefile b/plugins/mysqlx/Makefile
index 5c29d7e49..635b51480 100644
--- a/plugins/mysqlx/Makefile
+++ b/plugins/mysqlx/Makefile
@@ -18,7 +18,8 @@ CXXFLAGS := $(STDCPP) -fPIC $(OPTZ) $(WGCOV) $(WASAN)
 
 SRCS := $(PLUGIN_DIR)/src/mysqlx_plugin.cpp \
 	$(PLUGIN_DIR)/src/mysqlx_admin_schema.cpp
-HEADERS := $(wildcard $(PLUGIN_DIR)/include/*.h)
+HEADERS := $(wildcard $(PLUGIN_DIR)/include/*.h) \
+	$(PROXYSQL_PATH)/include/ProxySQL_Plugin.h
 OBJS := $(patsubst $(PLUGIN_DIR)/src/%.cpp,$(ODIR)/%.o,$(SRCS))
 
 $(ODIR):