diff --git a/AMBuildScript b/AMBuildScript
index 94604416..0c682684 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -230,7 +230,7 @@ class SM:
 			else:
 				staticLibs = os.path.join(sdkPath, 'lib', 'linux')
 			workFolder = os.path.join(AMBuild.outputFolder, job.workFolder)
-			if sdk == 'ep2v' or sdk == 'l4d2':
+			if sdk in ['ep2v', 'l4d', 'l4d2']:
 				for i in ['tier1_i486.a', 'mathlib_i486.a', 'libvstdlib.so', 'libtier0.so']:
 					link = os.path.join(workFolder, i)
 					target = os.path.join(staticLibs, i)
@@ -315,7 +315,7 @@ class SM:
 		if not noLink:
 			if AMBuild.target['platform'] == 'linux':
 				compiler['POSTLINKFLAGS'][0:0] = ['-lm']
-				if sdk == 'ep2v' or sdk == 'l4d2':
+				if sdk in ['ep2v', 'l4d', 'l4d2']:
 					compiler['POSTLINKFLAGS'][0:0] = ['libtier0.so']
 					compiler['POSTLINKFLAGS'][0:0] = ['libvstdlib.so']
 				else:
diff --git a/core/logic_bridge.cpp b/core/logic_bridge.cpp
index 606964e7..61702901 100644
--- a/core/logic_bridge.cpp
+++ b/core/logic_bridge.cpp
@@ -152,7 +152,7 @@ static const char *get_source_engine_name()
 
 static bool symbols_are_hidden()
 {
-#if (SOURCE_ENGINE == SE_ORANGEBOXVALVE) || (SOURCE_ENGINE == SE_LEFT4DEAD2)
+#if (SOURCE_ENGINE == SE_ORANGEBOXVALVE) || (SOURCE_ENGINE == SE_LEFT4DEAD) || (SOURCE_ENGINE == SE_LEFT4DEAD2)
 	return true;
 #else
 	return false;