diff --git a/sys/pc98/i386/machdep.c b/sys/pc98/i386/machdep.c
index 2edef06fe410..0e273024d007 100644
--- a/sys/pc98/i386/machdep.c
+++ b/sys/pc98/i386/machdep.c
@@ -273,7 +273,7 @@ cpu_startup(dummy)
 	/*
 	 * Good {morning,afternoon,evening,night}.
 	 */
-	printf(version);
+	printf("%s", version);
 	earlysetcpuclass();
 	startrtclock();
 	printcpuinfo();
diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c
index 2edef06fe410..0e273024d007 100644
--- a/sys/pc98/pc98/machdep.c
+++ b/sys/pc98/pc98/machdep.c
@@ -273,7 +273,7 @@ cpu_startup(dummy)
 	/*
 	 * Good {morning,afternoon,evening,night}.
 	 */
-	printf(version);
+	printf("%s", version);
 	earlysetcpuclass();
 	startrtclock();
 	printcpuinfo();