diff --git a/public/mms_sample_ext/Makefile b/public/mms_sample_ext/Makefile
index b7ce08d2..e869ebf0 100644
--- a/public/mms_sample_ext/Makefile
+++ b/public/mms_sample_ext/Makefile
@@ -82,8 +82,8 @@ else
 	endif
 endif
 
-# if ENGINE is orig, OB, or L4D
-ifneq (,$(filter original orangebox left4dead,$(ENGINE)))
+# if ENGINE is original or OB
+ifneq (,$(filter original orangebox,$(ENGINE)))
 	LIB_SUFFIX = _i486.$(LIB_EXT)
 else
 	LIB_PREFIX = lib
diff --git a/public/sample_ext/Makefile b/public/sample_ext/Makefile
index f7bdb938..f355335a 100644
--- a/public/sample_ext/Makefile
+++ b/public/sample_ext/Makefile
@@ -90,8 +90,8 @@ else
 	endif
 endif
 
-# if ENGINE is orig, OB, or L4D
-ifneq (,$(filter original orangebox left4dead,$(ENGINE)))
+# if ENGINE is original or OB
+ifneq (,$(filter original orangebox,$(ENGINE)))
 	LIB_SUFFIX = _i486.$(LIB_EXT)
 else
 	LIB_PREFIX = lib