diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index 39b3acfe3fa..461dbbec2fa 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -3079,6 +3079,8 @@ BaseMaterial3D::BaseMaterial3D(bool p_orm) :
 	flags[FLAG_ALBEDO_TEXTURE_MSDF] = false;
 	flags[FLAG_USE_TEXTURE_REPEAT] = true;
 
+	current_key.invalid_key = 1;
+
 	_mark_initialized(callable_mp(this, &BaseMaterial3D::_queue_shader_change));
 }
 
diff --git a/scene/resources/material.h b/scene/resources/material.h
index 8cd583c709e..a631f775988 100644
--- a/scene/resources/material.h
+++ b/scene/resources/material.h
@@ -325,6 +325,7 @@ private:
 		uint64_t emission_op : get_num_bits(EMISSION_OP_MAX - 1);
 		uint64_t distance_fade : get_num_bits(DISTANCE_FADE_MAX - 1);
 		// booleans
+		uint64_t invalid_key : 1;
 		uint64_t deep_parallax : 1;
 		uint64_t grow : 1;
 		uint64_t proximity_fade : 1;