diff --git a/src/common.c b/src/common.c
index 44221c7..d27a55c 100644
--- a/src/common.c
+++ b/src/common.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
+/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
  * SPDX-License-Identifier: MIT */
 
 #include "common.h"
@@ -56,7 +56,7 @@ vaerr(const char *prefix, const char *func, const char *errstr, va_list ap)
 	}
 }
 
-void
+void __attribute__((format(printf, 3, 4)))
 verr(const char *prefix, const char *func, const char *errstr, ...)
 {
 	va_list ap;
@@ -65,7 +65,7 @@ verr(const char *prefix, const char *func, const char *errstr, ...)
 	va_end(ap);
 }
 
-void
+void __attribute__((format(printf, 3, 4)))
 vdie(const char *prefix, const char *func, const char *errstr, ...)
 {
 	va_list ap;
diff --git a/src/emu/chan.c b/src/emu/chan.c
index 4832bef..c9de48a 100644
--- a/src/emu/chan.c
+++ b/src/emu/chan.c
@@ -7,7 +7,7 @@
 #include <string.h>
 #include "common.h"
 
-void
+void __attribute__((format(printf, 3, 4)))
 chan_init(struct chan *chan, enum chan_type type, const char *fmt, ...)
 {
 	memset(chan, 0, sizeof(struct chan));
diff --git a/src/emu/track.c b/src/emu/track.c
index f7d313c..0516be2 100644
--- a/src/emu/track.c
+++ b/src/emu/track.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
+/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
  * SPDX-License-Identifier: GPL-3.0-or-later */
 
 #include "track.h"
@@ -17,7 +17,7 @@ static const char **track_suffix[TRACK_TYPE_MAX] = {
 	[TRACK_TYPE_TH] = th_suffix,
 };
 
-int
+int __attribute__((format(printf, 5, 6)))
 track_init(struct track *track, struct bay *bay, enum track_type type, int mode, const char *fmt, ...)
 {
 	va_list ap;