diff --git a/src/amd/compiler/aco_instruction_selection.cpp b/src/amd/compiler/aco_instruction_selection.cpp
index 1d18ae9ca09..65ce9814385 100644
--- a/src/amd/compiler/aco_instruction_selection.cpp
+++ b/src/amd/compiler/aco_instruction_selection.cpp
@@ -8387,8 +8387,12 @@ visit_intrinsic(isel_context* ctx, nir_intrinsic_instr* instr)
       } else {
          aco_opcode subrev =
             instr->def.bit_size == 16 ? aco_opcode::v_subrev_f16 : aco_opcode::v_subrev_f32;
+
+         /* v_interp with constant sources only works on GFX11/11.5,
+          * and it's only faster on GFX11.5.
+          */
          bool use_interp = dpp_ctrl1 == dpp_quad_perm(0, 0, 0, 0) && instr->def.bit_size == 32 &&
-                           ctx->program->gfx_level >= GFX11_5;
+                           ctx->program->gfx_level == GFX11_5;
          if (!nir_src_is_divergent(&instr->src[0])) {
             bld.vop2(subrev, Definition(dst), src, src);
          } else if (use_interp && dpp_ctrl2 == dpp_quad_perm(1, 1, 1, 1)) {