diff --git a/sys/alpha/alpha/machdep.c b/sys/alpha/alpha/machdep.c
index 4ec9ba54ac17..6d95d9a26941 100644
--- a/sys/alpha/alpha/machdep.c
+++ b/sys/alpha/alpha/machdep.c
@@ -260,7 +260,7 @@ cpu_startup(dummy)
 	/*
 	 * Good {morning,afternoon,evening,night}.
 	 */
-	printf(version);
+	printf("%s", version);
 	identifycpu();
 
 	/* startrtclock(); */
diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
index 2bf6dc54ecd5..f4d019a6ac5d 100644
--- a/sys/amd64/amd64/machdep.c
+++ b/sys/amd64/amd64/machdep.c
@@ -260,7 +260,7 @@ cpu_startup(dummy)
 	/*
 	 * Good {morning,afternoon,evening,night}.
 	 */
-	printf(version);
+	printf("%s", version);
 	earlysetcpuclass();
 	startrtclock();
 	printcpuinfo();
diff --git a/sys/i386/i386/machdep.c b/sys/i386/i386/machdep.c
index 2bf6dc54ecd5..f4d019a6ac5d 100644
--- a/sys/i386/i386/machdep.c
+++ b/sys/i386/i386/machdep.c
@@ -260,7 +260,7 @@ cpu_startup(dummy)
 	/*
 	 * Good {morning,afternoon,evening,night}.
 	 */
-	printf(version);
+	printf("%s", version);
 	earlysetcpuclass();
 	startrtclock();
 	printcpuinfo();