diff --git a/doc/classes/ProjectSettings.xml b/doc/classes/ProjectSettings.xml
index c30747eac16..21be5e4beed 100644
--- a/doc/classes/ProjectSettings.xml
+++ b/doc/classes/ProjectSettings.xml
@@ -474,9 +474,6 @@
 		<member name="debug/gdscript/warnings/static_called_on_instance" type="int" setter="" getter="" default="1">
 			When set to [code]warn[/code] or [code]error[/code], produces a warning or an error respectively when calling a static method from an instance of a class instead of from the class directly.
 		</member>
-		<member name="debug/gdscript/warnings/treat_warnings_as_errors" type="bool" setter="" getter="" default="false">
-			If [code]true[/code], all warnings will be reported as if they are errors.
-		</member>
 		<member name="debug/gdscript/warnings/unassigned_variable" type="int" setter="" getter="" default="1">
 			When set to [code]warn[/code] or [code]error[/code], produces a warning or an error respectively when using a variable that wasn't previously assigned.
 		</member>
diff --git a/modules/gdscript/gdscript.cpp b/modules/gdscript/gdscript.cpp
index a876229276f..fe79f374548 100644
--- a/modules/gdscript/gdscript.cpp
+++ b/modules/gdscript/gdscript.cpp
@@ -2578,7 +2578,6 @@ GDScriptLanguage::GDScriptLanguage() {
 
 #ifdef DEBUG_ENABLED
 	GLOBAL_DEF("debug/gdscript/warnings/enable", true);
-	GLOBAL_DEF("debug/gdscript/warnings/treat_warnings_as_errors", false);
 	GLOBAL_DEF("debug/gdscript/warnings/exclude_addons", true);
 	for (int i = 0; i < (int)GDScriptWarning::WARNING_MAX; i++) {
 		GDScriptWarning::Code code = (GDScriptWarning::Code)i;
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 42e1f27603e..b5cb5a46801 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -175,7 +175,7 @@ void GDScriptParser::push_warning(const Node *p_source, GDScriptWarning::Code p_
 	warning.leftmost_column = p_source->leftmost_column;
 	warning.rightmost_column = p_source->rightmost_column;
 
-	if (warn_level == GDScriptWarning::WarnLevel::ERROR || bool(GLOBAL_GET("debug/gdscript/warnings/treat_warnings_as_errors"))) {
+	if (warn_level == GDScriptWarning::WarnLevel::ERROR) {
 		push_error(warning.get_message() + String(" (Warning treated as error.)"), p_source);
 		return;
 	}