diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 72e42e8170..6564533b49 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Tue Apr 25 11:27:14 1995  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* dbxread.c: Add comment explaining lowest_text_address.
+
 Sat Apr 22 01:26:29 1995  Jeff Law  (law@snake.cs.utah.edu)
 
 	* config/pa/tm-hppa.h (EXTRACT_STRUCT_VALUE_ADDRESS): Fix.
diff --git a/gdb/dbxread.c b/gdb/dbxread.c
index 927a0e1de8..3a4bc07046 100644
--- a/gdb/dbxread.c
+++ b/gdb/dbxread.c
@@ -159,7 +159,11 @@ static int symfile_relocatable = 0;
 
 static int block_address_function_relative = 0;
 
-/* This is the lowest text address we have yet encountered.  */
+/* The lowest text address we have yet encountered.  This is needed
+   because in an a.out file, there is no header field which tells us
+   what address the program is actually going to be loaded at, so we
+   need to make guesses based on the symbols (which *are* relocated to
+   reflect the address it will be loaded at).  */
 static CORE_ADDR lowest_text_address;
 
 /* Complaints about the symbols we have encountered.  */