diff --git a/Makefile b/Makefile
index 0b8c646..a049117 100644
--- a/Makefile
+++ b/Makefile
@@ -132,7 +132,7 @@ ifeq ($(UNAME_S),Darwin)
 	cd $(LIBDIR) && ln -sf $(REALNAME) $(SONAME)
 endif
 ifeq ($(UNAME_S),Linux)
-ifeq ($(UID), 0)
+ifeq ($(USER), root)
 	ldconfig
 else
 	cd $(LIBDIR) && ln -sf $(REALNAME) $(SONAME)