diff --git a/polymer/eduke32/build/include/build.h b/polymer/eduke32/build/include/build.h
index 8945853ef..ba0357cca 100644
--- a/polymer/eduke32/build/include/build.h
+++ b/polymer/eduke32/build/include/build.h
@@ -1423,8 +1423,8 @@ typedef struct
 void hash_init(hashtable_t *t);
 void hash_loop(hashtable_t *t, void (*func)(const char *, intptr_t));
 void hash_free(hashtable_t *t);
-intptr_t  hash_findcase(const hashtable_t *t, const char *s);
-intptr_t  hash_find(const hashtable_t *t, const char *s);
+intptr_t  hash_findcase(hashtable_t const * const t, char const * const s);
+intptr_t  hash_find(hashtable_t const * const t, char const * const s);
 void hash_add(hashtable_t *t, const char *s, intptr_t key, int32_t replace);
 void hash_delete(hashtable_t *t, const char *s);
 
diff --git a/polymer/eduke32/build/src/engine.c b/polymer/eduke32/build/src/engine.c
index 56b515784..451b8b698 100644
--- a/polymer/eduke32/build/src/engine.c
+++ b/polymer/eduke32/build/src/engine.c
@@ -18504,7 +18504,7 @@ void hash_delete(hashtable_t *t, const char *s)
     while ((cur = cur->next));
 }
 
-intptr_t hash_find(const hashtable_t *t, const char *s)
+intptr_t hash_find(const hashtable_t * const t, char const * const s)
 {
     if (t->items == NULL)
     {
@@ -18525,7 +18525,7 @@ intptr_t hash_find(const hashtable_t *t, const char *s)
     return -1;
 }
 
-intptr_t hash_findcase(const hashtable_t *t, const char *s)
+intptr_t hash_findcase(const hashtable_t * const t, char const * const s)
 {
 
     if (t->items == NULL)