diff --git a/src/main/java/com/xxmicloxx/NoteBlockAPI/NBSDecoder.java b/src/main/java/com/xxmicloxx/NoteBlockAPI/NBSDecoder.java
index 332cb52..85798c3 100644
--- a/src/main/java/com/xxmicloxx/NoteBlockAPI/NBSDecoder.java
+++ b/src/main/java/com/xxmicloxx/NoteBlockAPI/NBSDecoder.java
@@ -63,9 +63,12 @@ private static Song parse(InputStream inputStream, File songFile) {
 			int firstcustominstrument = 10; //Backward compatibility - most of songs with old structure are from 1.12
 			int firstcustominstrumentdiff;
 			int nbsversion = 0;
-			if (length == 0){
+			if (length == 0) {
 				nbsversion = dataInputStream.readByte();
 				firstcustominstrument = dataInputStream.readByte();
+				if (nbsversion >= 3) {
+					length = readShort(dataInputStream);
+				}
 			}
 			firstcustominstrumentdiff = InstrumentUtils.getCustomInstrumentFirstIndex() - firstcustominstrument;
 			short songHeight = readShort(dataInputStream);
@@ -110,7 +113,7 @@ private static Song parse(InputStream inputStream, File songFile) {
 				}
 			}
 
-			if (nbsversion > 0) {
+			if (nbsversion > 0 && nbsversion < 3) {
 				length = tick;
 			}
 
diff --git a/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java b/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java
index c82b684..dd81167 100644
--- a/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java
+++ b/src/main/java/com/xxmicloxx/NoteBlockAPI/utils/NBSDecoder.java
@@ -66,9 +66,12 @@ private static Song parse(InputStream inputStream, File songFile) {
 			int firstcustominstrument = 10; //Backward compatibility - most of songs with old structure are from 1.12
 			int firstcustominstrumentdiff;
 			int nbsversion = 0;
-			if (length == 0){
+			if (length == 0) {
 				nbsversion = dataInputStream.readByte();
 				firstcustominstrument = dataInputStream.readByte();
+				if (nbsversion >= 3) {
+					length = readShort(dataInputStream);
+				}
 			}
 			firstcustominstrumentdiff = InstrumentUtils.getCustomInstrumentFirstIndex() - firstcustominstrument;
 			short songHeight = readShort(dataInputStream);
@@ -113,7 +116,7 @@ private static Song parse(InputStream inputStream, File songFile) {
 				}
 			}
 
-			if (nbsversion > 0) {
+			if (nbsversion > 0 && nbsversion < 3) {
 				length = tick;
 			}