diff --git a/libavcodec/snow_dwt.c b/libavcodec/snow_dwt.c
index ecba0ea9da..c148cdab01 100644
--- a/libavcodec/snow_dwt.c
+++ b/libavcodec/snow_dwt.c
@@ -839,7 +839,7 @@ int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_
     return w_c(v, pix1, pix2, line_size, 32, h, 0);
 }
 
-void ff_dsputil_init_dwt(MECmpContext *c)
+av_cold void ff_dsputil_init_dwt(MECmpContext *c)
 {
     c->w53[0] = w53_16_c;
     c->w53[1] = w53_8_c;
@@ -847,7 +847,7 @@ void ff_dsputil_init_dwt(MECmpContext *c)
     c->w97[1] = w97_8_c;
 }
 
-void ff_dwt_init(SnowDWTContext *c)
+av_cold void ff_dwt_init(SnowDWTContext *c)
 {
     c->vertical_compose97i   = ff_snow_vertical_compose97i;
     c->horizontal_compose97i = ff_snow_horizontal_compose97i;
diff --git a/libavcodec/x86/snowdsp.c b/libavcodec/x86/snowdsp.c
index 2778489026..e2ad511d0a 100644
--- a/libavcodec/x86/snowdsp.c
+++ b/libavcodec/x86/snowdsp.c
@@ -877,7 +877,7 @@ static void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_str
 
 #endif /* HAVE_INLINE_ASM */
 
-void ff_dwt_init_x86(SnowDWTContext *c)
+av_cold void ff_dwt_init_x86(SnowDWTContext *c)
 {
 #if HAVE_INLINE_ASM
     int mm_flags = av_get_cpu_flags();