diff --git a/core/core_bind.cpp b/core/core_bind.cpp
index 457a1100549..4845f5f1aef 100644
--- a/core/core_bind.cpp
+++ b/core/core_bind.cpp
@@ -715,9 +715,9 @@ void _OS::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("shell_open", "uri"), &_OS::shell_open);
 	ClassDB::bind_method(D_METHOD("get_process_id"), &_OS::get_process_id);
 
-	ClassDB::bind_method(D_METHOD("get_environment", "environment"), &_OS::get_environment);
-	ClassDB::bind_method(D_METHOD("set_environment", "environment", "value"), &_OS::set_environment);
-	ClassDB::bind_method(D_METHOD("has_environment", "environment"), &_OS::has_environment);
+	ClassDB::bind_method(D_METHOD("get_environment", "variable"), &_OS::get_environment);
+	ClassDB::bind_method(D_METHOD("set_environment", "variable", "value"), &_OS::set_environment);
+	ClassDB::bind_method(D_METHOD("has_environment", "variable"), &_OS::has_environment);
 
 	ClassDB::bind_method(D_METHOD("get_name"), &_OS::get_name);
 	ClassDB::bind_method(D_METHOD("get_cmdline_args"), &_OS::get_cmdline_args);
diff --git a/doc/classes/OS.xml b/doc/classes/OS.xml
index 6a59f24ac24..de3e9a8e109 100644
--- a/doc/classes/OS.xml
+++ b/doc/classes/OS.xml
@@ -207,10 +207,11 @@
 		<method name="get_environment" qualifiers="const">
 			<return type="String">
 			</return>
-			<argument index="0" name="environment" type="String">
+			<argument index="0" name="variable" type="String">
 			</argument>
 			<description>
-				Returns an environment variable.
+				Returns the value of an environment variable. Returns an empty string if the environment variable doesn't exist.
+				[b]Note:[/b] Double-check the casing of [code]variable[/code]. Environment variable names are case-sensitive on all platforms except Windows.
 			</description>
 		</method>
 		<method name="get_executable_path" qualifiers="const">
@@ -383,10 +384,11 @@
 		<method name="has_environment" qualifiers="const">
 			<return type="bool">
 			</return>
-			<argument index="0" name="environment" type="String">
+			<argument index="0" name="variable" type="String">
 			</argument>
 			<description>
-				Returns [code]true[/code] if an environment variable exists.
+				Returns [code]true[/code] if the environment variable with the name [code]variable[/code] exists.
+				[b]Note:[/b] Double-check the casing of [code]variable[/code]. Environment variable names are case-sensitive on all platforms except Windows.
 			</description>
 		</method>
 		<method name="has_feature" qualifiers="const">
@@ -504,12 +506,13 @@
 		<method name="set_environment" qualifiers="const">
 			<return type="bool">
 			</return>
-			<argument index="0" name="environment" type="String">
+			<argument index="0" name="variable" type="String">
 			</argument>
 			<argument index="1" name="value" type="String">
 			</argument>
 			<description>
-				Change the value of an environment variable.
+				Sets the value of the environment variable [code]variable[/code] to [code]value[/code]. The environment variable will be set for the Godot process and any process executed with [method execute] after running [method set_environment]. The environment variable will [i]not[/i] persist to processes run after the Godot process was terminated.
+				[b]Note:[/b] Double-check the casing of [code]variable[/code]. Environment variable names are case-sensitive on all platforms except Windows.
 			</description>
 		</method>
 		<method name="set_thread_name">