diff --git a/src/target/llvm/codegen_llvm.cc b/src/target/llvm/codegen_llvm.cc
index 87479ec74237..aa25b1436737 100644
--- a/src/target/llvm/codegen_llvm.cc
+++ b/src/target/llvm/codegen_llvm.cc
@@ -1784,6 +1784,7 @@ void CodeGenLLVM::VisitStmt_(const AllocateConstNode* op) {
   llvm::GlobalVariable* param_symbol = new llvm::GlobalVariable(
       *module_, array->getType(), true, llvm::GlobalValue::InternalLinkage, array, symbol_name);
 
+  param_symbol->setAlignment(data.DataType().bits());
   var_map_[op->buffer_var.operator->()] = param_symbol;
   this->VisitStmt(op->body);
 }