diff --git a/src/newgrf/newgrf_act0_sounds.cpp b/src/newgrf/newgrf_act0_sounds.cpp
index 7f5c5300e6..a80699d41d 100644
--- a/src/newgrf/newgrf_act0_sounds.cpp
+++ b/src/newgrf/newgrf_act0_sounds.cpp
@@ -26,6 +26,7 @@
 static ChangeInfoResult SoundEffectChangeInfo(uint first, uint last, int prop, ByteReader &buf)
 {
 	ChangeInfoResult ret = CIR_SUCCESS;
+	if (first == last) return ret;
 
 	if (_cur_gps.grffile->sound_offset == 0) {
 		GrfMsg(1, "SoundEffectChangeInfo: No effects defined, skipping");
diff --git a/src/newgrf/newgrf_act11.cpp b/src/newgrf/newgrf_act11.cpp
index fd1dc38029..e923fcfe28 100644
--- a/src/newgrf/newgrf_act11.cpp
+++ b/src/newgrf/newgrf_act11.cpp
@@ -175,6 +175,6 @@ static void SkipAct11(ByteReader &buf)
 template <> void GrfActionHandler<0x11>::FileScan(ByteReader &buf) { SkipAct11(buf); }
 template <> void GrfActionHandler<0x11>::SafetyScan(ByteReader &buf) { GRFUnsafe(buf); }
 template <> void GrfActionHandler<0x11>::LabelScan(ByteReader &buf) { SkipAct11(buf); }
-template <> void GrfActionHandler<0x11>::Init(ByteReader &buf) { SkipAct11(buf); }
+template <> void GrfActionHandler<0x11>::Init(ByteReader &buf) { GRFSound(buf); }
 template <> void GrfActionHandler<0x11>::Reserve(ByteReader &buf) { SkipAct11(buf); }
 template <> void GrfActionHandler<0x11>::Activation(ByteReader &buf) { GRFSound(buf); }