diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
index 3b4446a226..5675828a41 100644
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@@ -2667,7 +2667,7 @@ static void add_8x8basis_mmx(int16_t rem[64], int16_t basis[64], int scale){
 #endif /* CONFIG_ENCODERS */
 
 #define PREFETCH(name, op) \
-void name(void *mem, int stride, int h){\
+static void name(void *mem, int stride, int h){\
     const uint8_t *p= mem;\
     do{\
         asm volatile(#op" %0" :: "m"(*p));\
@@ -3007,7 +3007,7 @@ static void vector_fmul_add_add_sse(float *dst, const float *src0, const float *
         ff_vector_fmul_add_add_c(dst, src0, src1, src2, src3, len, step);
 }
 
-void float_to_int16_3dnow(int16_t *dst, const float *src, int len){
+static void float_to_int16_3dnow(int16_t *dst, const float *src, int len){
     // not bit-exact: pf2id uses different rounding than C and SSE
     int i;
     for(i=0; i<len; i+=4) {
@@ -3022,7 +3022,7 @@ void float_to_int16_3dnow(int16_t *dst, const float *src, int len){
     }
     asm volatile("femms");
 }
-void float_to_int16_sse(int16_t *dst, const float *src, int len){
+static void float_to_int16_sse(int16_t *dst, const float *src, int len){
     int i;
     for(i=0; i<len; i+=4) {
         asm volatile(
diff --git a/libavcodec/i386/fdct_mmx.c b/libavcodec/i386/fdct_mmx.c
index ad7272bf5f..2ffbfecf64 100644
--- a/libavcodec/i386/fdct_mmx.c
+++ b/libavcodec/i386/fdct_mmx.c
@@ -67,7 +67,7 @@ static const int64_t fdct_one_corr ATTR_ALIGN(8) = 0x0001000100010001LL;
 
 static const int32_t fdct_r_row[2] ATTR_ALIGN(8) = {RND_FRW_ROW, RND_FRW_ROW };
 
-struct
+static struct
 {
  const int32_t fdct_r_row_sse2[4] ATTR_ALIGN(16);
 } fdct_r_row_sse2 ATTR_ALIGN(16)=
@@ -150,7 +150,7 @@ static const int16_t tab_frw_01234567[] ATTR_ALIGN(8) = {  // forward_dct coeff
   29692,  -12299,   26722,  -31521,
 };
 
-struct
+static struct
 {
  const int16_t tab_frw_01234567_sse2[256] ATTR_ALIGN(16);
 } tab_frw_01234567_sse2 ATTR_ALIGN(16) =