diff --git a/core/HalfLife2.cpp b/core/HalfLife2.cpp
index b0c5de535..177f73f92 100644
--- a/core/HalfLife2.cpp
+++ b/core/HalfLife2.cpp
@@ -193,7 +193,8 @@ void CHalfLife2::InitLogicalEntData()
 	|| SOURCE_ENGINE == SE_HL2DM   \
 	|| SOURCE_ENGINE == SE_CSS     \
 	|| SOURCE_ENGINE == SE_SDK2013 \
-	|| SOURCE_ENGINE == SE_BMS
+	|| SOURCE_ENGINE == SE_BMS     \
+	|| SOURCE_ENGINE == SE_NUCLEARDAWN
 
 	if (g_SMAPI->GetServerFactory(false)("VSERVERTOOLS003", nullptr))
 	{
diff --git a/extensions/sdktools/tempents.cpp b/extensions/sdktools/tempents.cpp
index 25eabb110..2a089b11b 100644
--- a/extensions/sdktools/tempents.cpp
+++ b/extensions/sdktools/tempents.cpp
@@ -290,7 +290,8 @@ void TempEntityManager::Initialize()
 	|| SOURCE_ENGINE == SE_HL2DM   \
 	|| SOURCE_ENGINE == SE_CSS     \
 	|| SOURCE_ENGINE == SE_SDK2013 \
-	|| SOURCE_ENGINE == SE_BMS
+	|| SOURCE_ENGINE == SE_BMS     \
+	|| SOURCE_ENGINE == SE_NUCLEARDAWN
 
 	if (g_SMAPI->GetServerFactory(false)("VSERVERTOOLS003", nullptr))
 	{
diff --git a/extensions/sdktools/vnatives.cpp b/extensions/sdktools/vnatives.cpp
index f50227400..3b9efe019 100644
--- a/extensions/sdktools/vnatives.cpp
+++ b/extensions/sdktools/vnatives.cpp
@@ -829,12 +829,13 @@ static cell_t NativeFindEntityByClassname(IPluginContext *pContext, const cell_t
 
 static cell_t FindEntityByClassname(IPluginContext *pContext, const cell_t *params)
 {
-#if SOURCE_ENGINE == SE_TF2      \
-	|| SOURCE_ENGINE == SE_DODS  \
-	|| SOURCE_ENGINE == SE_HL2DM \
-	|| SOURCE_ENGINE == SE_CSS   \
-	|| SOURCE_ENGINE == SE_BMS   \
-	|| SOURCE_ENGINE == SE_SDK2013
+#if SOURCE_ENGINE == SE_TF2        \
+	|| SOURCE_ENGINE == SE_DODS    \
+	|| SOURCE_ENGINE == SE_HL2DM   \
+	|| SOURCE_ENGINE == SE_CSS     \
+	|| SOURCE_ENGINE == SE_BMS     \
+	|| SOURCE_ENGINE == SE_SDK2013 \
+	|| SOURCE_ENGINE == SE_NUCLEARDAWN
 
 	static bool bHasServerTools3 = !!g_SMAPI->GetServerFactory(false)("VSERVERTOOLS003", nullptr);
 	if (bHasServerTools3)