diff --git a/src/compiler/spirv/vtn_glsl450.c b/src/compiler/spirv/vtn_glsl450.c
index 242f3db02aa..af6b1330563 100644
--- a/src/compiler/spirv/vtn_glsl450.c
+++ b/src/compiler/spirv/vtn_glsl450.c
@@ -339,8 +339,11 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
       nir_ssa_def *sign = nir_fsign(nb, src[0]);
       nir_ssa_def *abs = nir_fabs(nb, src[0]);
       dest->def = nir_fmul(nb, sign, nir_ffract(nb, abs));
-      nir_store_deref(nb, vtn_nir_deref(b, w[6]),
-                      nir_fmul(nb, sign, nir_ffloor(nb, abs)), 0xf);
+
+      struct vtn_pointer *i_ptr = vtn_value(b, w[6], vtn_value_type_pointer)->pointer;
+      struct vtn_ssa_value *whole = vtn_create_ssa_value(b, i_ptr->type->type);
+      whole->def = nir_fmul(nb, sign, nir_ffloor(nb, abs));
+      vtn_variable_store(b, whole, i_ptr, 0);
       break;
    }
 
@@ -526,9 +529,12 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
       break;
 
    case GLSLstd450Frexp: {
-      nir_ssa_def *exponent = nir_frexp_exp(nb, src[0]);
       dest->def = nir_frexp_sig(nb, src[0]);
-      nir_store_deref(nb, vtn_nir_deref(b, w[6]), exponent, 0xf);
+
+      struct vtn_pointer *i_ptr = vtn_value(b, w[6], vtn_value_type_pointer)->pointer;
+      struct vtn_ssa_value *exp = vtn_create_ssa_value(b, i_ptr->type->type);
+      exp->def = nir_frexp_exp(nb, src[0]);
+      vtn_variable_store(b, exp, i_ptr, 0);
       break;
    }