diff --git a/LUFA/Build/lufa.core.in b/LUFA/Build/lufa.core.in
index d111aad715..13372c4543 100644
--- a/LUFA/Build/lufa.core.in
+++ b/LUFA/Build/lufa.core.in
@@ -102,4 +102,8 @@ list_optional:
 	@echo Optional Variables for Included Modules: $(SORTED_LUFA_OPTIONAL_VARS)
 
 # Phony build targets for this module
-.PHONY: help list_modules list_targets list_mandatory list_optional
\ No newline at end of file
+.PHONY: help list_modules list_targets list_mandatory list_optional
+
+# Disable default in-built make rules (those that are needed are explicitly
+# defined, and doing so has performance benefits when recursively building)
+.SUFFIXES: