diff --git a/src/server/dispenser.qc b/src/server/dispenser.qc
index 08529bf..1a1f156 100644
--- a/src/server/dispenser.qc
+++ b/src/server/dispenser.qc
@@ -1,3 +1,18 @@
+/*
+ * Copyright (c) 2022 Marco Cawthorne <marco@icculus.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
 
 #define TFC_DISPENSER_COST 100
 
@@ -55,8 +70,10 @@ CSEv_TFC_BuildDispenser_(void)
 		return;
 
 	/* it costs */
-	if (pl.m_iAmmoCells < TFC_DISPENSER_COST)
+	if (pl.m_iAmmoCells < TFC_DISPENSER_COST) {
+		env_message_single(pl, "#Build_nometal");
 		return;
+	}
 
 	pl.m_iAmmoCells -= TFC_DISPENSER_COST;
 
diff --git a/src/server/sentry.qc b/src/server/sentry.qc
index ebcccb6..1dbc03e 100644
--- a/src/server/sentry.qc
+++ b/src/server/sentry.qc
@@ -1,3 +1,18 @@
+/*
+ * Copyright (c) 2022 Marco Cawthorne <marco@icculus.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
 
 #define TFC_SENTRY_COST 130
 
@@ -65,8 +80,10 @@ CSEv_TFC_BuildSentry_(void)
 		return;
 
 	/* it costs */
-	if (pl.m_iAmmoCells < TFC_SENTRY_COST)
+	if (pl.m_iAmmoCells < TFC_SENTRY_COST) {
+		env_message_single(pl, "#Build_nometal");
 		return;
+	}
 
 	pl.m_iAmmoCells -= TFC_SENTRY_COST;
 
diff --git a/src/server/teleporter.qc b/src/server/teleporter.qc
index 97122d2..9a642fd 100644
--- a/src/server/teleporter.qc
+++ b/src/server/teleporter.qc
@@ -1,3 +1,18 @@
+/*
+ * Copyright (c) 2022 Marco Cawthorne <marco@icculus.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
 
 #define TFC_TELEPORTER_COST 125
 
@@ -121,8 +136,10 @@ CSEv_TFC_BuildTele_(void)
 		return;
 
 	/* it costs */
-	if (pl.m_iAmmoCells < TFC_TELEPORTER_COST)
+	if (pl.m_iAmmoCells < TFC_TELEPORTER_COST) {
+		env_message_single(pl, "#Build_nometal");
 		return;
+	}
 
 	pl.m_iAmmoCells -= TFC_TELEPORTER_COST;
 
@@ -142,8 +159,10 @@ CSEv_TFC_BuildTeleExit_(void)
 		return;
 
 	/* it costs */
-	if (pl.m_iAmmoCells < TFC_TELEPORTER_COST)
+	if (pl.m_iAmmoCells < TFC_TELEPORTER_COST) {
+		env_message_single(pl, "#Build_nometal");
 		return;
+	}
 
 	pl.m_iAmmoCells -= TFC_TELEPORTER_COST;