diff --git a/numba/cuda/cudadrv/nvrtc.py b/numba/cuda/cudadrv/nvrtc.py
index c046adf9b48..7db321c283c 100644
--- a/numba/cuda/cudadrv/nvrtc.py
+++ b/numba/cuda/cudadrv/nvrtc.py
@@ -125,7 +125,8 @@ def checked_call(*args, func=func, name=name):
                             try:
                                 error_name = NvrtcResult(error).name
                             except ValueError:
-                                error_name = f'Unknown nvrtc_result {error}'
+                                error_name = ('Unknown nvrtc_result '
+                                              f'(error code: {error})')
                             msg = f'Failed to call {name}: {error_name}'
                             raise NvrtcError(msg)