diff --git a/core/include/cubos/core/ecs/system/system.hpp b/core/include/cubos/core/ecs/system/system.hpp
index 7b8ccd8220..010b56ef78 100644
--- a/core/include/cubos/core/ecs/system/system.hpp
+++ b/core/include/cubos/core/ecs/system/system.hpp
@@ -43,7 +43,7 @@ namespace cubos::core::ecs
         /// A system may be invalid, if, for example, it both reads and writes the same resource.
         ///
         /// @return Whether the system is valid.
-        bool valid() const;
+        static bool valid();
 
         /// @brief Checks if this system is compatible with another system.
         ///
diff --git a/core/src/cubos/core/ecs/system/system.cpp b/core/src/cubos/core/ecs/system/system.cpp
index bf262d1b6b..a2ae369fed 100644
--- a/core/src/cubos/core/ecs/system/system.cpp
+++ b/core/src/cubos/core/ecs/system/system.cpp
@@ -2,21 +2,8 @@
 
 using namespace cubos::core::ecs;
 
-bool SystemInfo::valid() const
+bool SystemInfo::valid()
 {
-    if (this->usesWorld)
-    {
-        return !this->usesCommands && this->resourcesRead.empty() && this->resourcesWritten.empty();
-    }
-
-    for (const auto& rsc : this->resourcesRead)
-    {
-        if (this->resourcesWritten.contains(rsc))
-        {
-            return false;
-        }
-    }
-
     return true;
 }
 
diff --git a/core/tests/ecs/system.cpp b/core/tests/ecs/system.cpp
index dffb36e015..319711c285 100644
--- a/core/tests/ecs/system.cpp
+++ b/core/tests/ecs/system.cpp
@@ -54,35 +54,6 @@ TEST_CASE("ecs::SystemInfo")
         CHECK(infoA.valid());
     }
 
-    SUBCASE("A is invalid")
-    {
-        SUBCASE("A reads and writes to the same resource")
-        {
-            infoA.resourcesRead.insert(typeid(int));
-            infoA.resourcesWritten.insert(typeid(int));
-        }
-
-        SUBCASE("A uses the world directly and reads a resource")
-        {
-            infoA.usesWorld = true;
-            infoA.resourcesRead.insert(typeid(int));
-        }
-
-        SUBCASE("A uses the world directly and writes a resource")
-        {
-            infoA.usesWorld = true;
-            infoA.resourcesWritten.insert(typeid(int));
-        }
-
-        SUBCASE("A uses the world directly and uses commands")
-        {
-            infoA.usesWorld = true;
-            infoA.usesCommands = true;
-        }
-
-        CHECK_FALSE(infoA.valid());
-    }
-
     SUBCASE("A and B are compatible")
     {
         SUBCASE("both do nothing")