diff --git a/src/llvm_backend.zig b/src/llvm_backend.zig
index 97406797b6..206fcd4bda 100644
--- a/src/llvm_backend.zig
+++ b/src/llvm_backend.zig
@@ -271,6 +271,7 @@ pub const LLVMIRModule = struct {
             error.CodegenFail => {
                 decl.analysis = .codegen_failure;
                 try module.failed_decls.put(module.gpa, decl, self.err_msg.?);
+                self.err_msg = null;
                 return;
             },
             else => |e| return e,