diff --git a/src/lib/formats/cqm_dsk.cpp b/src/lib/formats/cqm_dsk.cpp
index 3afba37090d..64ff22939aa 100644
--- a/src/lib/formats/cqm_dsk.cpp
+++ b/src/lib/formats/cqm_dsk.cpp
@@ -308,7 +308,7 @@ bool cqm_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
 			if (heads == 1)
 				return false; // single side ED ?
 			image->set_variant(floppy_image::DSED);
-			[[fallthrough]]; // FIXME: really?
+			break;
 		default:
 			return false;
 	}
diff --git a/src/mame/drivers/ti89.cpp b/src/mame/drivers/ti89.cpp
index d47451ef609..8554531dcc2 100644
--- a/src/mame/drivers/ti89.cpp
+++ b/src/mame/drivers/ti89.cpp
@@ -79,7 +79,7 @@ void ti68k_state::ti68k_io_w(offs_t offset, uint16_t data)
 			break;
 		case 0x0b:
 			m_timer_val = data & 0xff;
-			[[fallthrough]]; // FIXME: really?
+			break;
 		case 0x0c:
 			m_kb_mask = data & 0x03ff;
 			break;