diff --git a/public/mms_sample_ext/Makefile b/public/mms_sample_ext/Makefile
index 88bb4fd4..beaa8937 100644
--- a/public/mms_sample_ext/Makefile
+++ b/public/mms_sample_ext/Makefile
@@ -71,7 +71,8 @@ ifeq "$(ENGINE)" "left4dead"
 	METAMOD = $(MMSOURCE18)/core
 	INCLUDE += -I$(HL2SDK)/public/game/server
 	SRCDS = $(SRCDS_BASE)/l4d
-	LIB_SUFFIX = _i486.so
+	LIB_PREFIX = lib
+	LIB_SUFFIX = .so
 	override ENGSET = true
 endif
 ifeq "$(ENGINE)" "left4dead2"
diff --git a/public/sample_ext/Makefile b/public/sample_ext/Makefile
index 22ca2ae7..05d0b62f 100644
--- a/public/sample_ext/Makefile
+++ b/public/sample_ext/Makefile
@@ -74,7 +74,8 @@ ifeq "$(ENGINE)" "left4dead"
 	METAMOD = $(MMSOURCE18)/core
 	INCLUDE += -I$(HL2SDK)/public/game/server
 	SRCDS = $(SRCDS_BASE)/l4d
-	LIB_SUFFIX = _i486.so
+	LIB_PREFIX = lib
+	LIB_SUFFIX = .so
 	override ENGSET = true
 endif
 ifeq "$(ENGINE)" "left4dead2"