diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index 73d3008a0b3..5f86ecaa202 100644
--- a/src/glsl/nir/nir.c
+++ b/src/glsl/nir/nir.c
@@ -460,7 +460,7 @@ nir_tex_instr_create(void *mem_ctx, unsigned num_srcs)
    dest_init(&instr->dest);
 
    instr->num_srcs = num_srcs;
-   instr->src = ralloc_array(mem_ctx, nir_tex_src, num_srcs);
+   instr->src = ralloc_array(instr, nir_tex_src, num_srcs);
    for (unsigned i = 0; i < num_srcs; i++)
       src_init(&instr->src[i].src);