diff --git a/src/compiler/nir/nir_opt_copy_propagate.c b/src/compiler/nir/nir_opt_copy_propagate.c
index 00c78f38451..4a98a2812c3 100644
--- a/src/compiler/nir/nir_opt_copy_propagate.c
+++ b/src/compiler/nir/nir_opt_copy_propagate.c
@@ -61,9 +61,8 @@ static bool is_vec(nir_alu_instr *instr)
          return false;
    }
 
-   return instr->op == nir_op_vec2 ||
-          instr->op == nir_op_vec3 ||
-          instr->op == nir_op_vec4;
+   assert(instr->dest.dest.is_ssa);
+   return nir_op_is_vec(instr->op);
 }
 
 static bool