diff --git a/libavcodec/bink.c b/libavcodec/bink.c
index 34d4d10fae..e085aa54e2 100644
--- a/libavcodec/bink.c
+++ b/libavcodec/bink.c
@@ -1208,7 +1208,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
 /**
  * Caclulate quantization tables for version b
  */
-static av_cold void binkb_calc_quant()
+static av_cold void binkb_calc_quant(void)
 {
     uint8_t inv_bink_scan[64];
     double s[64];
diff --git a/libavformat/network.h b/libavformat/network.h
index 881384c943..db8466ce20 100644
--- a/libavformat/network.h
+++ b/libavformat/network.h
@@ -33,7 +33,8 @@
 #define ECONNREFUSED    WSAECONNREFUSED
 #define EINPROGRESS     WSAEINPROGRESS
 
-static inline int ff_neterrno() {
+static inline int ff_neterrno(void)
+{
     int err = WSAGetLastError();
     switch (err) {
     case WSAEWOULDBLOCK: