diff --git a/src/asahi/compiler/agx_compile.c b/src/asahi/compiler/agx_compile.c
index ac7509d9d2f..e4936804cf0 100644
--- a/src/asahi/compiler/agx_compile.c
+++ b/src/asahi/compiler/agx_compile.c
@@ -852,7 +852,7 @@ agx_alu_src_index(agx_builder *b, nir_alu_src src)
    unsigned comps = nir_src_num_components(src.src);
    unsigned channel = src.swizzle[0];
 
-   assert(bitsize == 1 || bitsize == 16 || bitsize == 32 || bitsize == 64);
+   assert(bitsize == 1 || bitsize == 8 || bitsize == 16 || bitsize == 32 || bitsize == 64);
    assert(!(src.negate || src.abs));
    assert(channel < comps);
 
diff --git a/src/asahi/compiler/agx_compiler.h b/src/asahi/compiler/agx_compiler.h
index 36ad3f0f816..45ffa20c06a 100644
--- a/src/asahi/compiler/agx_compiler.h
+++ b/src/asahi/compiler/agx_compiler.h
@@ -442,6 +442,7 @@ agx_size_for_bits(unsigned bits)
 {
    switch (bits) {
    case 1:
+   case 8:
    case 16: return AGX_SIZE_16;
    case 32: return AGX_SIZE_32;
    case 64: return AGX_SIZE_64;