diff --git a/plugins/luarocks/lpeg.mk b/plugins/luarocks/lpeg.mk
index 2c1af1a3..4d099dbf 100644
--- a/plugins/luarocks/lpeg.mk
+++ b/plugins/luarocks/lpeg.mk
@@ -15,7 +15,7 @@ $(PKG)_DEPS     := gcc luarocks
 define $(PKG)_UPDATE
     $(WGET) -q -O- 'http://www.inf.puc-rio.br/~roberto/lpeg/' | \
     $(SED) -n 's,.*lpeg-\([0-9][^>]*\)\.tar.*,\1,p' | \
-    sort -h | tail -1
+    $(SORT) -h | tail -1
 endef
 
 # shared-only because luarocks is shared-only
diff --git a/plugins/luarocks/luarocks.mk b/plugins/luarocks/luarocks.mk
index 7f5ee94b..b7cbbae3 100644
--- a/plugins/luarocks/luarocks.mk
+++ b/plugins/luarocks/luarocks.mk
@@ -15,7 +15,7 @@ $(PKG)_DEPS     := gcc lua
 define $(PKG)_UPDATE
     $(WGET) -q -O- 'https://keplerproject.github.io/luarocks/releases/' | \
     $(SED) -n 's,.*luarocks-\([0-9][^>]*\)\.tar.*,\1,p' | \
-    sort -h | tail -1
+    $(SORT) -h | tail -1
 endef
 
 # shared-only because Lua loads modules in runtime