diff --git a/modules/gdscript/gdscript_compiler.cpp b/modules/gdscript/gdscript_compiler.cpp
index f495b0d78710..4ac9864d4f63 100644
--- a/modules/gdscript/gdscript_compiler.cpp
+++ b/modules/gdscript/gdscript_compiler.cpp
@@ -971,6 +971,9 @@ GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &code
 				} else {
 					gen->write_set(prev_base, key, assigned);
 				}
+				if (key.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
+					gen->pop_temporary();
+				}
 				if (assigned.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
 					gen->pop_temporary();
 				}