diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index eb478e2186..c2c9090a36 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -615,7 +615,7 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int
     uint8_t *y_table;
     uint16_t *y_table16;
     uint32_t *y_table32;
-    int i, base, rbase, gbase, bbase, abase, needAlpha;
+    int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;
     const int yoffs = fullRange ? 384 : 326;
 
     int64_t crv =  inv_table[0];