diff --git a/commands.c b/commands.c
index 5e053a4..d431b07 100644
--- a/commands.c
+++ b/commands.c
@@ -270,7 +270,7 @@ cmd_savef(girara_session_t* session, girara_list_t* argument_list)
 }
 
 bool
-cmd_search(girara_session_t* session, char* input, girara_argument_t* argument)
+cmd_search(girara_session_t* session, const char* input, girara_argument_t* argument)
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(input != NULL, false);
diff --git a/commands.h b/commands.h
index 75cf885..4318430 100644
--- a/commands.h
+++ b/commands.h
@@ -104,6 +104,6 @@ bool cmd_savef(girara_session_t* session, girara_list_t* argument_list);
  * @param argument Passed argument
  * @return true if no error occured
  */
-bool cmd_search(girara_session_t* session, char* input, girara_argument_t* argument);
+bool cmd_search(girara_session_t* session, const char* input, girara_argument_t* argument);
 
 #endif // COMMANDS_H