diff --git a/internal/engine.cm b/internal/engine.cm
index 9be0f913..97e3995d 100644
--- a/internal/engine.cm
+++ b/internal/engine.cm
@@ -309,7 +309,7 @@ function run_ast_fn(name, ast, env) {
     _ui = 0
     while (_ui < length(compiled._unresolved_imports)) {
       _ur = compiled._unresolved_imports[_ui]
-      print(`${name}:${text(_ur.line)}:${text(_ur.col)}: error: cannot resolve module '${_ur.path}'\n`)
+      os.print(`${name}:${text(_ur.line)}:${text(_ur.col)}: error: cannot resolve module '${_ur.path}'\n`)
       _ui = _ui + 1
     }
     disrupt
@@ -324,7 +324,7 @@ function run_ast_fn(name, ast, env) {
     _has_errors = false
     while (_di < length(optimized._diagnostics)) {
       _diag = optimized._diagnostics[_di]
-      print(`${_diag.file}:${text(_diag.line)}:${text(_diag.col)}: ${_diag.severity}: ${_diag.message}\n`)
+      os.print(`${_diag.file}:${text(_diag.line)}:${text(_diag.col)}: ${_diag.severity}: ${_diag.message}\n`)
       if (_diag.severity == "error") _has_errors = true
       _di = _di + 1
     }
@@ -376,7 +376,7 @@ function compile_user_blob(name, ast) {
     _ui = 0
     while (_ui < length(compiled._unresolved_imports)) {
       _ur = compiled._unresolved_imports[_ui]
-      print(`${name}:${text(_ur.line)}:${text(_ur.col)}: error: cannot resolve module '${_ur.path}'\n`)
+      os.print(`${name}:${text(_ur.line)}:${text(_ur.col)}: error: cannot resolve module '${_ur.path}'\n`)
       _ui = _ui + 1
     }
     disrupt
@@ -387,7 +387,7 @@ function compile_user_blob(name, ast) {
     _has_errors = false
     while (_di < length(optimized._diagnostics)) {
       _diag = optimized._diagnostics[_di]
-      print(`${_diag.file}:${text(_diag.line)}:${text(_diag.col)}: ${_diag.severity}: ${_diag.message}\n`)
+      os.print(`${_diag.file}:${text(_diag.line)}:${text(_diag.col)}: ${_diag.severity}: ${_diag.message}\n`)
       if (_diag.severity == "error") _has_errors = true
       _di = _di + 1
     }