diff --git a/src/main/java/com/wazeedigital/subtitle/FormatSCC.java b/src/main/java/com/wazeedigital/subtitle/FormatSCC.java
index 80bec88..38e7926 100644
--- a/src/main/java/com/wazeedigital/subtitle/FormatSCC.java
+++ b/src/main/java/com/wazeedigital/subtitle/FormatSCC.java
@@ -191,7 +191,7 @@ else if (word == 0x0000)
 														while (tto.captions.containsKey(key))
 															key++;
 														// we save the caption
-														tto.captions.put(newCaption.start.mseconds, newCaption);
+														tto.captions.put(key, newCaption);
 														// and reset the caption builder
 														newCaption = new Caption();
 													}
@@ -212,7 +212,7 @@ else if (word == 0x0000)
 														while (tto.captions.containsKey(key))
 															key++;
 														// we save the caption
-														tto.captions.put(newCaption.start.mseconds, newCaption);
+														tto.captions.put(key, newCaption);
 													}
 												}
 												// End of caption: Swap off-screen buffer with caption screen.