diff --git a/sp/src/game/server/AI_ResponseSystem.cpp b/sp/src/game/server/AI_ResponseSystem.cpp
index 43fc871b..a46ddb36 100644
--- a/sp/src/game/server/AI_ResponseSystem.cpp
+++ b/sp/src/game/server/AI_ResponseSystem.cpp
@@ -2025,7 +2025,8 @@ void CResponseSystem::ParseInclude( CStringPool &includedFiles )
 
 		if (len+1 != strlen(scriptfile))
 		{
-			Q_snprintf(includefile, sizeof(includefile), "%s/%s", includefile, token);
+			Q_strncat( includefile, "/", sizeof( includefile ) );
+			Q_strncat( includefile, token, sizeof( includefile ) );
 		}
 		else
 			includefile[0] = '\0';
diff --git a/sp/src/responserules/runtime/response_system.cpp b/sp/src/responserules/runtime/response_system.cpp
index 653c5cbf..7ae9276c 100644
--- a/sp/src/responserules/runtime/response_system.cpp
+++ b/sp/src/responserules/runtime/response_system.cpp
@@ -1509,7 +1509,8 @@ void CResponseSystem::ParseInclude()
 
 	if (len+1 != strlen(scriptfile))
 	{
-		Q_snprintf(includefile, sizeof(includefile), "%s/%s", includefile, token);
+		Q_strncat( includefile, "/", sizeof( includefile ) );
+		Q_strncat( includefile, token, sizeof( includefile ) );
 	}
 	else
 		includefile[0] = '\0';