diff --git a/secilc/secil2conf.c b/secilc/secil2conf.c
index ff564f08..5d8fe870 100644
--- a/secilc/secil2conf.c
+++ b/secilc/secil2conf.c
@@ -41,7 +41,7 @@
 #endif
 #include <sepol/policydb.h>
 
-void usage(char *prog)
+static __attribute__((__noreturn__)) void usage(const char *prog)
 {
 	printf("Usage: %s [OPTION]... FILE...\n", prog);
 	printf("\n");
diff --git a/secilc/secilc.c b/secilc/secilc.c
index dad1e904..f4ecbeec 100644
--- a/secilc/secilc.c
+++ b/secilc/secilc.c
@@ -41,7 +41,7 @@
 #endif
 #include <sepol/policydb.h>
 
-void usage(char *prog)
+static __attribute__((__noreturn__)) void usage(const char *prog)
 {
 	printf("Usage: %s [OPTION]... FILE...\n", prog);
 	printf("\n");