diff --git a/agb/src/sound/mixer/mixer.s b/agb/src/sound/mixer/mixer.s
index c66922b9..8c2ebe3b 100644
--- a/agb/src/sound/mixer/mixer.s
+++ b/agb/src/sound/mixer/mixer.s
@@ -26,15 +26,11 @@ agb_rs__mixer_add:
 1:
     add r4, r0, r5, asr #8                      @ calculate the address of the next read form the sound buffer
     add r5, r5, r2                              @ calculate the position to read the next step from
-
-    mov r6, r1                                  @ r6 = current buffer location
-    ldrh r9, [r6, r12]!                         @ load the current buffer value (r12 being the offset)
-                                                @ but pre-increment r6 by r12
-
     ldrsb r10, [r4]                             @ load the current value we want to read
 
-    add r12, r12, #2                            @ increment the current write offset in the resulting buffer
+    mov r6, r1                                  @ r6 = current buffer location
 
+    ldrh r9, [r6, r12]!                         @ load the current buffer value (r12 being the offset) but pre-increment r6 by r12
     mla r7, r10, r3, r9                         @ r7 = r10 * r3 + r9 = current sound value * left amount + previous buffer value
     strh r7, [r6], r8                           @ *(r6 + r8) = r7, r8 = 352 = offset for the right hand side
 
@@ -42,6 +38,7 @@ agb_rs__mixer_add:
     mla r4, r10, lr, r7
     strh r4, [r6]
 
+    add r12, r12, #2                            @ increment the current write offset in the resulting buffer
     cmp r12, #352                               @ check if we're done
     bne 1b