diff --git a/src/freedreno/ir3/ir3_nir_lower_tex_prefetch.c b/src/freedreno/ir3/ir3_nir_lower_tex_prefetch.c
index ec987b79d2f..45e65365864 100644
--- a/src/freedreno/ir3/ir3_nir_lower_tex_prefetch.c
+++ b/src/freedreno/ir3/ir3_nir_lower_tex_prefetch.c
@@ -48,16 +48,21 @@ coord_offset(nir_ssa_def *ssa)
       if (!alu->src[0].src.is_ssa)
          return -1;
 
-      int base_offset =
-         coord_offset(alu->src[0].src.ssa) + alu->src[0].swizzle[0];
+      int base_src_offset = coord_offset(alu->src[0].src.ssa);
+      if (base_src_offset < 0)
+         return -1;
+
+      int base_offset = base_src_offset + alu->src[0].swizzle[0];
 
       /* NOTE it might be possible to support more than 2D? */
       for (int i = 1; i < 2; i++) {
          if (!alu->src[i].src.is_ssa)
             return -1;
 
-         int nth_offset =
-            coord_offset(alu->src[i].src.ssa) + alu->src[i].swizzle[0];
+         int nth_src_offset = coord_offset(alu->src[i].src.ssa);
+         if (nth_src_offset < 0)
+            return -1;
+         int nth_offset = nth_src_offset + alu->src[i].swizzle[0];
 
          if (nth_offset != (base_offset + i))
             return -1;