Index: apps/app_voicemail.c
===================================================================
--- apps/app_voicemail.c	(revision 143199)
+++ apps/app_voicemail.c	(working copy)
@@ -3330,7 +3330,7 @@
 			int vmlen = strlen(fromstring) * 3 + 200;
 			passdata = alloca(vmlen);
 			memset(passdata, 0, vmlen);
-			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, enc_cidname, dur, date, passdata, vmlen, category);
+			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, cidname?enc_cidname:NULL, dur, date, passdata, vmlen, category);
 			pbx_substitute_variables_helper(ast, fromstring, passdata, vmlen);
 			len_passdata = strlen(passdata) * 2 + 3;
 			passdata2 = alloca(len_passdata);
@@ -3352,7 +3352,7 @@
 			int vmlen = strlen(emailsubject) * 3 + 200;
 			passdata = alloca(vmlen);
 			memset(passdata, 0, vmlen);
-			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, enc_cidname, dur, date, passdata, vmlen, category);
+			prep_email_sub_vars(ast, vmu, msgnum + 1, context, mailbox, enc_cidnum, cidname?enc_cidname:NULL, dur, date, passdata, vmlen, category);
 			pbx_substitute_variables_helper(ast, emailsubject, passdata, vmlen);
 			fprintf(p, "Subject: %s" ENDL, passdata);
 			ast_channel_free(ast);