diff --git a/ptx/src/pass/emit_llvm.rs b/ptx/src/pass/emit_llvm.rs
index 20f9891..bd5c277 100644
--- a/ptx/src/pass/emit_llvm.rs
+++ b/ptx/src/pass/emit_llvm.rs
@@ -27,7 +27,7 @@
 use std::array::TryFromSliceError;
 use std::convert::TryInto;
 use std::ffi::{CStr, NulError};
-use std::mem;
+use std::mem::MaybeUninit;
 use std::ops::Deref;
 use std::{i8, ptr};
 
@@ -153,9 +153,10 @@ pub struct MemoryBuffer(LLVMMemoryBufferRef);
 impl MemoryBuffer {
     pub fn print_as_asm(&self) -> &str {
         unsafe {
-            let mut module: LLVMModuleRef = mem::zeroed();
             let context = Context::new();
-            LLVMParseBitcodeInContext2(context.0, self.0, &mut module);
+            let mut module = MaybeUninit::uninit();
+            LLVMParseBitcodeInContext2(context.0, self.0, module.as_mut_ptr());
+            let module = module.assume_init();
             let asm = LLVMPrintModuleToString(module);
             LLVMDisposeModule(module);
             let asm = CStr::from_ptr(asm);