diff --git a/src/add-ons/kernel/drivers/audio/ac97/sis7018/Settings.cpp b/src/add-ons/kernel/drivers/audio/ac97/sis7018/Settings.cpp
index 07fed1c89e..c536b08015 100644
--- a/src/add-ons/kernel/drivers/audio/ac97/sis7018/Settings.cpp
+++ b/src/add-ons/kernel/drivers/audio/ac97/sis7018/Settings.cpp
@@ -102,7 +102,7 @@ void SiS7018_trace(bool force, const char* func, const char *fmt, ...)
 	va_end(arg_list);
 
 	if (gLogFilePath == NULL) {
-		dprintf(buffer);
+		dprintf("%s", buffer);
 		return;
 	}
 
diff --git a/src/add-ons/kernel/drivers/audio/usb/Settings.cpp b/src/add-ons/kernel/drivers/audio/usb/Settings.cpp
index aa3c26a8ed..b7edd30dc0 100644
--- a/src/add-ons/kernel/drivers/audio/usb/Settings.cpp
+++ b/src/add-ons/kernel/drivers/audio/usb/Settings.cpp
@@ -103,7 +103,7 @@ void usb_audio_trace(uint32 bits, const char* func, const char* fmt, ...)
 	va_end(arg_list);
 
 	if (gLogFilePath == NULL) {
-		dprintf(buffer);
+		dprintf("%s", buffer);
 		return;
 	}
 
diff --git a/src/add-ons/kernel/drivers/network/usb_asix/Settings.cpp b/src/add-ons/kernel/drivers/network/usb_asix/Settings.cpp
index 718065e9af..7911c6abf8 100644
--- a/src/add-ons/kernel/drivers/network/usb_asix/Settings.cpp
+++ b/src/add-ons/kernel/drivers/network/usb_asix/Settings.cpp
@@ -111,7 +111,7 @@ void usb_asix_trace(bool force, const char* func, const char *fmt, ...)
 	va_end(arg_list);
 
 	if (gLogFilePath == NULL) {
-		dprintf(buffer);
+		dprintf("%s", buffer);
 		return;
 	}
 
diff --git a/src/add-ons/kernel/drivers/network/usb_davicom/Settings.cpp b/src/add-ons/kernel/drivers/network/usb_davicom/Settings.cpp
index 876d046a43..b00d15d75a 100644
--- a/src/add-ons/kernel/drivers/network/usb_davicom/Settings.cpp
+++ b/src/add-ons/kernel/drivers/network/usb_davicom/Settings.cpp
@@ -118,7 +118,7 @@ void usb_davicom_trace(bool force, const char* func, const char *fmt, ...)
 	va_end(arg_list);
 
 	if (gLogFilePath == NULL) {
-		dprintf(buffer);
+		dprintf("%s", buffer);
 		return;
 	}