diff --git a/libavfilter/vf_fsppdsp.c b/libavfilter/vf_fsppdsp.c
index ab31c77203..d2d04463b4 100644
--- a/libavfilter/vf_fsppdsp.c
+++ b/libavfilter/vf_fsppdsp.c
@@ -29,7 +29,7 @@
 
 #define DCTSIZE 8
 
-#define FIX(x,s)  ((x) * (1 << s) + 0.5)
+#define FIX(x,s)  (int)((x) * (1 << s) + 0.5)
 
 #define MULTIPLY16H(x,k)   (((x) * (k)) >> 16)
 #define THRESHOLD(r,x,t)                         \
@@ -38,15 +38,18 @@
 #define DESCALE(x,n)  (((x) + (1 << ((n) - 1))) >> n)
 
 typedef int32_t int_simd16_t;
-static const int16_t FIX_0_382683433   = FIX(0.382683433, 14);
-static const int16_t FIX_0_541196100   = FIX(0.541196100, 14);
-static const int16_t FIX_0_707106781   = FIX(M_SQRT1_2  , 14);
-static const int16_t FIX_1_306562965   = FIX(1.306562965, 14);
-static const int16_t FIX_1_414213562_A = FIX(M_SQRT2    , 14);
-static const int16_t FIX_1_847759065   = FIX(1.847759065, 13);
-static const int16_t FIX_2_613125930   = FIX(-2.613125930, 13);
-static const int16_t FIX_1_414213562   = FIX(M_SQRT2    , 13);
-static const int16_t FIX_1_082392200   = FIX(1.082392200, 13);
+
+enum {
+    FIX_0_382683433   = FIX(0.382683433, 14),
+    FIX_0_541196100   = FIX(0.541196100, 14),
+    FIX_0_707106781   = FIX(M_SQRT1_2  , 14),
+    FIX_1_306562965   = FIX(1.306562965, 14),
+    FIX_1_414213562_A = FIX(M_SQRT2    , 14),
+    FIX_1_847759065   = FIX(1.847759065, 13),
+    FIX_2_613125930   = FIX(-2.613125930, 13),
+    FIX_1_414213562   = FIX(M_SQRT2    , 13),
+    FIX_1_082392200   = FIX(1.082392200, 13),
+};
 
 DECLARE_ALIGNED(32, static const uint8_t, dither)[8][8] = {
     {  0,  48,  12,  60,   3,  51,  15,  63, },