diff --git a/src/4cade.init.a b/src/4cade.init.a
index 32e6bf75a..adcd85feb 100644
--- a/src/4cade.init.a
+++ b/src/4cade.init.a
@@ -145,7 +145,9 @@ NotGS    clc
          dey
          bne   @LM
 
+         +READ_ROM_NO_WRITE
          jsr   BuildAcceleratorFunction
+         +READ_RAM2_WRITE_RAM2
          +STAY @accelSrc
          dex
 -
diff --git a/src/hw.normfast.a b/src/hw.normfast.a
index 60bc6e994..279e143ee 100644
--- a/src/hw.normfast.a
+++ b/src/hw.normfast.a
@@ -153,6 +153,7 @@ BuildAcceleratorFunction
 
          ldy   #EX_3MHZMASK ; phew, all needed bits set
          ldx   #<(ex_cfg)
+         jmp   build_setspeed
 
 gscheck
          pha