diff --git a/src/libImaging/ColorLUT.c b/src/libImaging/ColorLUT.c
index 76414e1dc..1af2a0a67 100644
--- a/src/libImaging/ColorLUT.c
+++ b/src/libImaging/ColorLUT.c
@@ -15,30 +15,6 @@
 
 #define SHIFT_BITS (16 - 1)
 
-static inline UINT8
-clip8(int in) {
-    return clip8_lookups[(in + PRECISION_ROUNDING) >> PRECISION_BITS];
-}
-
-static inline void
-interpolate3(INT16 out[3], const INT16 a[3], const INT16 b[3], INT16 shift) {
-    out[0] = (a[0] * ((1 << SHIFT_BITS) - shift) + b[0] * shift) >> SHIFT_BITS;
-    out[1] = (a[1] * ((1 << SHIFT_BITS) - shift) + b[1] * shift) >> SHIFT_BITS;
-    out[2] = (a[2] * ((1 << SHIFT_BITS) - shift) + b[2] * shift) >> SHIFT_BITS;
-}
-
-static inline void
-interpolate4(INT16 out[4], const INT16 a[4], const INT16 b[4], INT16 shift) {
-    out[0] = (a[0] * ((1 << SHIFT_BITS) - shift) + b[0] * shift) >> SHIFT_BITS;
-    out[1] = (a[1] * ((1 << SHIFT_BITS) - shift) + b[1] * shift) >> SHIFT_BITS;
-    out[2] = (a[2] * ((1 << SHIFT_BITS) - shift) + b[2] * shift) >> SHIFT_BITS;
-    out[3] = (a[3] * ((1 << SHIFT_BITS) - shift) + b[3] * shift) >> SHIFT_BITS;
-}
-
-static inline int
-table_index3D(int index1D, int index2D, int index3D, int size1D, int size1D_2D) {
-    return index1D + index2D * size1D + index3D * size1D_2D;
-}
 
 /*
  Transforms colors of imIn using provided 3D lookup table