1 file changed, 4 insertions, 4 deletions
diff --git a/source/filter.h b/source/filter.h
index 70fa4ff..2c8e7b7 100644
--- a/source/filter.h
+++ b/source/filter.h
@@ -26,16 +26,16 @@ struct cgit_filter {
 
 struct cgit_exec_filter {
 	struct cgit_filter base;
-	char *cmd;
-	char **argv;
+	const char *cmd;
+	const char **argv;
 	int old_stdout;
 	int pid;
 };
 
 extern struct cgit_filter *cgit_new_filter(const char *cmd,
 					   filter_type filtertype);
-extern void cgit_exec_filter_init(struct cgit_exec_filter *filter, char *cmd,
-				  char **argv);
+extern void cgit_exec_filter_init(struct cgit_exec_filter *filter, const char *cmd,
+				  const char **argv);
 
 /*
  * Redirect stdout into the filter and pass it the variadic arguments its type