diff --git a/spirv_msl.cpp b/spirv_msl.cpp
index d3c388d1..f4b28df1 100644
--- a/spirv_msl.cpp
+++ b/spirv_msl.cpp
@@ -9863,7 +9863,7 @@ uint32_t CompilerMSL::get_physical_tess_level_array_size(spv::BuiltIn builtin) c
 bool CompilerMSL::maybe_emit_array_assignment(uint32_t id_lhs, uint32_t id_rhs)
 {
 	// We only care about assignments of an entire array
-	auto &type = expression_type(id_rhs);
+	auto &type = expression_type(id_lhs);
 	if (!type_is_top_level_array(get_pointee_type(type)))
 		return false;