diff --git a/src/freedreno/ir3/ir3_parser.y b/src/freedreno/ir3/ir3_parser.y
index d2fb5753d7a..36256d870d1 100644
--- a/src/freedreno/ir3/ir3_parser.y
+++ b/src/freedreno/ir3/ir3_parser.y
@@ -1076,6 +1076,7 @@ cat5_a1:           src_reg        { instr->flags |= IR3_INSTR_A1EN; }
 cat5_instr:        cat5_opc_dsxypp cat5_flags dst_reg ',' src_reg
 |                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg ',' src_reg
 |                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg ',' cat5_samp ',' cat5_tex
+|                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg ',' cat5_samp ',' cat5_a1
 |                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg ',' cat5_samp
 |                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg ',' cat5_tex
 |                  cat5_opc cat5_flags cat5_type dst_reg ',' src_reg ',' src_reg
diff --git a/src/freedreno/ir3/tests/disasm.c b/src/freedreno/ir3/tests/disasm.c
index 2f1b89f0d79..2f49dbde236 100644
--- a/src/freedreno/ir3/tests/disasm.c
+++ b/src/freedreno/ir3/tests/disasm.c
@@ -167,6 +167,7 @@ static const struct test {
    INSTR_6XX(a0c81f00_e0200005, "sam.base0 (f32)(xyzw)r0.x, r0.z, s#1, a1.x"),
    INSTR_6XX(a0c81108_e2000001, "sam.base0 (f32)(x)r2.x, r0.x, s#16, a1.x"),
    INSTR_6XX(a048d107_cc080a07, "isaml.base3 (s32)(x)r1.w, r0.w, r1.y, s#0, t#6"),
+   INSTR_6XX(a048d107_e0080a07, "isaml.base3 (s32)(x)r1.w, r0.w, r1.y, s#0, a1.x"),
 
 
    /* dEQP-VK.subgroups.arithmetic.compute.subgroupadd_float */