4 files changed, 6 insertions, 6 deletions
diff --git a/src/common.c b/src/common.c
index b5af690..efc8431 100644
--- a/src/common.c
+++ b/src/common.c
@@ -118,7 +118,7 @@ void idevicerestore_set_debug_stream(FILE* strm)
 	}
 }
 
-const char* idevicerestore_get_error()
+const char* idevicerestore_get_error(void)
 {
 	if (idevicerestore_err_buff[0] == 0) {
 		return NULL;
@@ -223,7 +223,7 @@ void print_progress_bar(double progress) {
 
 #define GET_RAND(min, max) ((rand() % (max - min)) + min)
 
-char *generate_guid()
+char *generate_guid(void)
 {
 	char *guid = (char *) malloc(sizeof(char) * 37);
 	const char *chars = "ABCDEF0123456789";
diff --git a/src/common.h b/src/common.h
index 4d6441a..f7c9fd2 100644
--- a/src/common.h
+++ b/src/common.h
@@ -112,7 +112,7 @@ void print_progress_bar(double progress);
 int read_file(const char* filename, void** data, size_t* size);
 int write_file(const char* filename, const void* data, size_t size);
 
-char *generate_guid();
+char *generate_guid(void);
 
 #ifdef WIN32
 #include <windows.h>
diff --git a/src/idevicerestore.c b/src/idevicerestore.c
index e9a50dd..36996cd 100644
--- a/src/idevicerestore.c
+++ b/src/idevicerestore.c
@@ -926,7 +926,7 @@ int idevicerestore_start(struct idevicerestore_client_t* client)
 	return result;
 }
 
-struct idevicerestore_client_t* idevicerestore_client_new()
+struct idevicerestore_client_t* idevicerestore_client_new(void)
 {
 	struct idevicerestore_client_t* client = (struct idevicerestore_client_t*) malloc(sizeof(struct idevicerestore_client_t));
 	if (client == NULL) {
diff --git a/src/idevicerestore.h b/src/idevicerestore.h
index 3ec34a1..1e2124a 100644
--- a/src/idevicerestore.h
+++ b/src/idevicerestore.h
@@ -55,7 +55,7 @@ enum {
 
 typedef void (*idevicerestore_progress_cb_t)(int step, double step_progress, void* userdata);
 
-struct idevicerestore_client_t* idevicerestore_client_new();
+struct idevicerestore_client_t* idevicerestore_client_new(void);
 void idevicerestore_client_free(struct idevicerestore_client_t* client);
 
 void idevicerestore_set_ecid(struct idevicerestore_client_t* client, unsigned long long ecid);
@@ -69,7 +69,7 @@ void idevicerestore_set_error_stream(FILE* strm);
 void idevicerestore_set_debug_stream(FILE* strm);
 
 int idevicerestore_start(struct idevicerestore_client_t* client);
-const char* idevicerestore_get_error();
+const char* idevicerestore_get_error(void);
 
 void usage(int argc, char* argv[]);
 int check_mode(struct idevicerestore_client_t* client);