diff --git a/include/asterisk/doxyref.h b/include/asterisk/doxyref.h
index 710da354c6..7c3b798d8f 100644
--- a/include/asterisk/doxyref.h
+++ b/include/asterisk/doxyref.h
@@ -153,7 +153,7 @@ DUNDi is not itself a Voice-over IP signaling or media protocol. Instead, it pub
  * - \ref pbx_retrieve_variable()
  * - \ref AstChanVar
  *
- *  \verbinclude channelvariables.txt
+ *  \verbinclude channelvariables.tex
 
  */
 
diff --git a/main/ast_expr2.fl b/main/ast_expr2.fl
index 723eebf5ab..0749686faf 100644
--- a/main/ast_expr2.fl
+++ b/main/ast_expr2.fl
@@ -437,7 +437,7 @@ int ast_yyerror (const char *s,  yyltype *loc, struct parse_io *parseio )
 			(extra_error_message_supplied?extra_error_message:""), s2, parseio->string,spacebuf2);
 #endif
 #ifndef STANDALONE
-	ast_log(LOG_WARNING,"If you have questions, please refer to doc/channelvariables.txt in the asterisk source.\n");
+	ast_log(LOG_WARNING,"If you have questions, please refer to doc/tex/channelvariables.tex in the asterisk source.\n");
 #endif
 	free(s2);
 	return(0);
diff --git a/main/ast_expr2f.c b/main/ast_expr2f.c
index 19aa0f6d68..3d97d8b827 100644
--- a/main/ast_expr2f.c
+++ b/main/ast_expr2f.c
@@ -2531,7 +2531,7 @@ int ast_yyerror (const char *s,  yyltype *loc, struct parse_io *parseio )
 			(extra_error_message_supplied?extra_error_message:""), s2, parseio->string,spacebuf2);
 #endif
 #ifndef STANDALONE
-	ast_log(LOG_WARNING,"If you have questions, please refer to doc/channelvariables.txt in the asterisk source.\n");
+	ast_log(LOG_WARNING,"If you have questions, please refer to doc/tex/channelvariables.tex in the asterisk source.\n");
 #endif
 	free(s2);
 	return(0);