diff --git a/libavcodec/faandct.c b/libavcodec/faandct.c
index c8ea328f6d..b6830725d2 100644
--- a/libavcodec/faandct.c
+++ b/libavcodec/faandct.c
@@ -33,16 +33,18 @@ typedef float FLOAT;
 
 /* numbers generated by arbitrary precision arithmetic followed by truncation
 to 36 fractional digits (enough for a 128-bit IEEE quad, see /usr/include/math.h
-for this approach). This guarantees a "best effort precision".
+for this approach). Unfortunately, long double is not always available correctly,
+e.g ppc has issues.
+TODO: add L suffixes when ppc and toolchains sort out their stuff.
 */
-#define B0 1.000000000000000000000000000000000000L
-#define B1 0.720959822006947913789091890943021267L // (cos(pi*1/16)sqrt(2))^-1
-#define B2 0.765366864730179543456919968060797734L // (cos(pi*2/16)sqrt(2))^-1
-#define B3 0.850430094767256448766702844371412325L // (cos(pi*3/16)sqrt(2))^-1
-#define B4 1.000000000000000000000000000000000000L // (cos(pi*4/16)sqrt(2))^-1
-#define B5 1.272758580572833938461007018281767032L // (cos(pi*5/16)sqrt(2))^-1
-#define B6 1.847759065022573512256366378793576574L // (cos(pi*6/16)sqrt(2))^-1
-#define B7 3.624509785411551372409941227504289587L // (cos(pi*7/16)sqrt(2))^-1
+#define B0 1.000000000000000000000000000000000000
+#define B1 0.720959822006947913789091890943021267 // (cos(pi*1/16)sqrt(2))^-1
+#define B2 0.765366864730179543456919968060797734 // (cos(pi*2/16)sqrt(2))^-1
+#define B3 0.850430094767256448766702844371412325 // (cos(pi*3/16)sqrt(2))^-1
+#define B4 1.000000000000000000000000000000000000 // (cos(pi*4/16)sqrt(2))^-1
+#define B5 1.272758580572833938461007018281767032 // (cos(pi*5/16)sqrt(2))^-1
+#define B6 1.847759065022573512256366378793576574 // (cos(pi*6/16)sqrt(2))^-1
+#define B7 3.624509785411551372409941227504289587 // (cos(pi*7/16)sqrt(2))^-1
 
 #define A1 M_SQRT1_2              // cos(pi*4/16)
 #define A2 0.54119610014619698435 // cos(pi*6/16)sqrt(2)