diff --git a/src/glsl/nir/spirv/vtn_glsl450.c b/src/glsl/nir/spirv/vtn_glsl450.c
index 6470dc11b4d..515a743fe48 100644
--- a/src/glsl/nir/spirv/vtn_glsl450.c
+++ b/src/glsl/nir/spirv/vtn_glsl450.c
@@ -626,7 +626,6 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
 
    case GLSLstd450PackDouble2x32:
    case GLSLstd450UnpackDouble2x32:
-   case GLSLstd450IMix:
    default:
       unreachable("Unhandled opcode");
    }