diff --git a/src/mame/machine/n64.cpp b/src/mame/machine/n64.cpp
index 532aa9db70b..35459505d3b 100644
--- a/src/mame/machine/n64.cpp
+++ b/src/mame/machine/n64.cpp
@@ -1754,7 +1754,7 @@ int n64_periphs::pif_channel_handle_command(int channel, int slength, uint8_t *s
 							rdata[2] = 0x01;
 							return 0;
 					}
-					[[fallthrough]]; // FIXME: really?
+					break;
 				}
 				case 4:
 				{