diff --git a/src/libcrypto.c b/src/libcrypto.c
index da3f09db..02491030 100644
--- a/src/libcrypto.c
+++ b/src/libcrypto.c
@@ -527,7 +527,8 @@ static struct crypto_struct ssh_ciphertab[] = {
 };
 
 
-struct crypto_struct *ssh_get_ciphertab(){
+struct crypto_struct *ssh_get_ciphertab(void)
+{
   return ssh_ciphertab;
 }
 
diff --git a/src/libgcrypt.c b/src/libgcrypt.c
index 2e2695c8..b31ac709 100644
--- a/src/libgcrypt.c
+++ b/src/libgcrypt.c
@@ -474,7 +474,9 @@ static struct crypto_struct ssh_ciphertab[] = {
   }
 };
 
-struct crypto_struct *ssh_get_ciphertab(){
+struct crypto_struct *ssh_get_ciphertab(void)
+{
   return ssh_ciphertab;
 }
+
 #endif