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-rw-r--r--src/mesa/shader/prog_optimize.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/shader/prog_optimize.c b/src/mesa/shader/prog_optimize.c
index 3d28d885a44..4fe351251e8 100644
--- a/src/mesa/shader/prog_optimize.c
+++ b/src/mesa/shader/prog_optimize.c
@@ -443,7 +443,7 @@ _mesa_remove_extra_move_use(struct gl_program *prog)
* FOO tmpY, arg0, arg1;
*/
- for (i = 0; i < prog->NumInstructions - 1; i++) {
+ for (i = 0; i + 1 < prog->NumInstructions; i++) {
const struct prog_instruction *mov = prog->Instructions + i;
if (mov->Opcode != OPCODE_MOV ||