diff --git a/src/gallium/drivers/r300/compiler/r300_nir.h b/src/gallium/drivers/r300/compiler/r300_nir.h
index 1bef2ab520b..e645484e8f8 100644
--- a/src/gallium/drivers/r300/compiler/r300_nir.h
+++ b/src/gallium/drivers/r300/compiler/r300_nir.h
@@ -129,26 +129,6 @@ needs_vs_trig_input_fixup(UNUSED struct hash_table *ht, const nir_alu_instr *ins
    return false;
 }
 
-static inline bool
-needs_fs_trig_input_fixup(UNUSED struct hash_table *ht, const nir_alu_instr *instr, unsigned src,
-                          unsigned num_components, const uint8_t *swizzle)
-{
-   /* We are checking for ffract(a * (1 / 2 * pi)) pattern. */
-   nir_instr *parent = instr->src[src].src.ssa->parent_instr;
-   if (parent->type != nir_instr_type_alu)
-      return true;
-   nir_alu_instr *fract = nir_instr_as_alu(parent);
-   if (fract->op != nir_op_ffract)
-      return true;
-   parent = fract->src[0].src.ssa->parent_instr;
-
-   /* Now check for fmul(a, 1 / (2 * pi)). */
-   if (!check_instr_and_src_value(nir_op_fmul, &parent, 0.1591549))
-      return true;
-
-   return false;
-}
-
 bool r300_is_only_used_as_float(const nir_alu_instr *instr);
 
 char *r300_finalize_nir(struct pipe_screen *pscreen, struct nir_shader *nir);
diff --git a/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py b/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
index 65b5c52383d..67c1feff85c 100644
--- a/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
+++ b/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
@@ -27,8 +27,8 @@ transform_trig_input_vs_r500 = [
 # y = frac(x / 2PI)
 #
 transform_trig_input_fs_r500 = [
-        (('fsin', 'a(needs_fs_trig_input_fixup)'), ('fsin', ('ffract', ('fmul', 'a', 1 / (2 * pi))))),
-        (('fcos', 'a(needs_fs_trig_input_fixup)'), ('fcos', ('ffract', ('fmul', 'a', 1 / (2 * pi))))),
+        (('fsin', 'a'), ('fsin', ('ffract', ('fmul', 'a', 1 / (2 * pi))))),
+        (('fcos', 'a'), ('fcos', ('ffract', ('fmul', 'a', 1 / (2 * pi))))),
 ]
 
 # The is a pattern produced by wined3d for A0 register load.