diff --git a/src/intel/compiler/brw_nir_opt_peephole_ffma.c b/src/intel/compiler/brw_nir_opt_peephole_ffma.c
index cc225e1847b..7271bdbca43 100644
--- a/src/intel/compiler/brw_nir_opt_peephole_ffma.c
+++ b/src/intel/compiler/brw_nir_opt_peephole_ffma.c
@@ -68,7 +68,7 @@ are_all_uses_fadd(nir_ssa_def *def)
 }
 
 static nir_alu_instr *
-get_mul_for_src(nir_alu_src *src, int num_components,
+get_mul_for_src(nir_alu_src *src, unsigned num_components,
                 uint8_t swizzle[4], bool *negate, bool *abs)
 {
    uint8_t swizzle_tmp[4];
@@ -93,16 +93,19 @@ get_mul_for_src(nir_alu_src *src, int num_components,
    switch (alu->op) {
    case nir_op_imov:
    case nir_op_fmov:
-      alu = get_mul_for_src(&alu->src[0], num_components, swizzle, negate, abs);
+      alu = get_mul_for_src(&alu->src[0], alu->dest.dest.ssa.num_components,
+                            swizzle, negate, abs);
       break;
 
    case nir_op_fneg:
-      alu = get_mul_for_src(&alu->src[0], num_components, swizzle, negate, abs);
+      alu = get_mul_for_src(&alu->src[0], alu->dest.dest.ssa.num_components,
+                            swizzle, negate, abs);
       *negate = !*negate;
       break;
 
    case nir_op_fabs:
-      alu = get_mul_for_src(&alu->src[0], num_components, swizzle, negate, abs);
+      alu = get_mul_for_src(&alu->src[0], alu->dest.dest.ssa.num_components,
+                            swizzle, negate, abs);
       *negate = false;
       *abs = true;
       break;