diff --git a/src/m_random.c b/src/m_random.c
index 755f7ca65..9401bb341 100644
--- a/src/m_random.c
+++ b/src/m_random.c
@@ -213,7 +213,7 @@ UINT8 P_RandomByteD(const char *rfile, INT32 rline, pr_class_t pr_class)
   * NOTE: Maximum range is 65536.
   *
   * \param a Number of items in array.
-  * \return A random integer from [0,a].
+  * \return A random integer from [0,a).
   * \sa __internal_prng__
   */
 #ifndef DEBUGRANDOM
diff --git a/src/s_sound.c b/src/s_sound.c
index 09154b286..f5124dbcd 100644
--- a/src/s_sound.c
+++ b/src/s_sound.c
@@ -2432,7 +2432,7 @@ void S_StartEx(boolean reset)
 
 	if (mapmusflags & MUSIC_RELOADRESET)
 	{
-		UINT32 i = P_RandomKey(PR_MUSICSELECT, 2);
+		UINT32 i = P_RandomKey(PR_MUSICSELECT, 3);
 		strncpy(mapmusname, mapheaderinfo[gamemap-1]->musname[i], 7);
 		mapmusname[6] = 0;
 		mapmusflags = (mapheaderinfo[gamemap-1]->mustrack & MUSIC_TRACKMASK);