1 files changed, 3 insertions, 3 deletions

diff --git a/apps/plugins/puzzles/src/unfinished/separate.c b/apps/plugins/puzzles/src/unfinished/separate.c
index a7b4fc96e1..7fd8da8202 100644
--- a/apps/plugins/puzzles/src/unfinished/separate.c
+++ b/apps/plugins/puzzles/src/unfinished/separate.c
@@ -170,7 +170,7 @@ static game_params *custom_params(const config_item *cfg)
     return NULL;
 }
 
-static char *validate_params(const game_params *params, int full)
+static const char *validate_params(const game_params *params, int full)
 {
     return NULL;
 }
@@ -646,7 +646,7 @@ static char *new_game_desc(const game_params *params, random_state *rs,
     return desc;
 }
 
-static char *validate_desc(const game_params *params, const char *desc)
+static const char *validate_desc(const game_params *params, const char *desc)
 {
     return NULL;
 }
@@ -676,7 +676,7 @@ static void free_game(game_state *state)
 }
 
 static char *solve_game(const game_state *state, const game_state *currstate,
-                        const char *aux, char **error)
+                        const char *aux, const char **error)
 {
     return NULL;
 }