diff --git a/docs/relnotes-7.6.1.html b/docs/relnotes-7.6.1.html
index 752f9cac643..7160168d989 100644
--- a/docs/relnotes-7.6.1.html
+++ b/docs/relnotes-7.6.1.html
@@ -58,6 +58,7 @@ tbd
 <li>Endianness fixes for the DRI swrast driver (bug 22767).</li>
 <li>Point sprite fixes for i915/945 driver.
 <li>Fixed assorted memory leaks (usually on error paths)
+<li>Fixed some GLSL compiler bugs (ex: 25579)
 </ul>
 
 <h2>Changes</h2>
diff --git a/src/mesa/shader/programopt.c b/src/mesa/shader/programopt.c
index a0daac1b806..9514545709d 100644
--- a/src/mesa/shader/programopt.c
+++ b/src/mesa/shader/programopt.c
@@ -528,15 +528,11 @@ _mesa_remove_output_reads(struct gl_program *prog, gl_register_file type)
    /* look for instructions which write to the varying vars identified above */
    for (i = 0; i < prog->NumInstructions; i++) {
       struct prog_instruction *inst = prog->Instructions + i;
-      const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
-      GLuint j;
-      for (j = 0; j < numSrc; j++) {
-         if (inst->DstReg.File == type &&
-             outputMap[inst->DstReg.Index] >= 0) {
-            /* change inst to write to the temp reg, instead of the varying */
-            inst->DstReg.File = PROGRAM_TEMPORARY;
-            inst->DstReg.Index = outputMap[inst->DstReg.Index];
-         }
+      if (inst->DstReg.File == type &&
+          outputMap[inst->DstReg.Index] >= 0) {
+         /* change inst to write to the temp reg, instead of the varying */
+         inst->DstReg.File = PROGRAM_TEMPORARY;
+         inst->DstReg.Index = outputMap[inst->DstReg.Index];
       }
    }