diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 948cbff6c62e..5034b0055169 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1420,6 +1420,7 @@ intel_tv_get_modes(struct drm_connector *connector)
 		if (!mode_ptr)
 			continue;
 		strncpy(mode_ptr->name, input->name, DRM_DISPLAY_MODE_LEN);
+		mode_ptr->name[DRM_DISPLAY_MODE_LEN - 1] = '\0';
 
 		mode_ptr->hdisplay = hactive_s;
 		mode_ptr->hsync_start = hactive_s + 1;