diff --git a/src/freedreno/ir3/ir3.h b/src/freedreno/ir3/ir3.h
index 57c50e6ba78..e88a09f1293 100644
--- a/src/freedreno/ir3/ir3.h
+++ b/src/freedreno/ir3/ir3.h
@@ -1416,6 +1416,12 @@ is_reg_gpr(const struct ir3_register *reg)
    return true;
 }
 
+static inline bool
+is_reg_a0(const struct ir3_register *reg)
+{
+   return reg->num == regid(REG_A0, 0);
+}
+
 /* is dst a normal temp register: */
 static inline bool
 is_dest_gpr(const struct ir3_register *dst)
diff --git a/src/freedreno/ir3/ir3_legalize.c b/src/freedreno/ir3/ir3_legalize.c
index fc66882038a..233f9eecdb8 100644
--- a/src/freedreno/ir3/ir3_legalize.c
+++ b/src/freedreno/ir3/ir3_legalize.c
@@ -647,7 +647,7 @@ legalize_block(struct ir3_legalize_ctx *ctx, struct ir3_block *block)
              * need to wait for previous ones.
              */
             foreach_src (reg, n) {
-               if (reg->flags & IR3_REG_SHARED) {
+               if ((reg->flags & IR3_REG_SHARED) || is_reg_a0(reg)) {
                   regmask_set(&state->needs_ss_scalar_war, reg);
                }
             }