diff --git a/upb/table.c b/upb/table.c
index 965a37c0b0..941f258411 100644
--- a/upb/table.c
+++ b/upb/table.c
@@ -433,7 +433,7 @@ const uint64_t kWyhashSalt[5] = {
     0x082EFA98EC4E6C89ULL, 0x452821E638D01377ULL,
 };
 
-uint32_t _upb_Hash(const char* p, size_t n, uint64_t seed) {
+uint32_t _upb_Hash(const void* p, size_t n, uint64_t seed) {
   return Wyhash(p, n, seed, kWyhashSalt);
 }
 
diff --git a/upb/table_internal.h b/upb/table_internal.h
index 1c3acce4be..418f470c3f 100644
--- a/upb/table_internal.h
+++ b/upb/table_internal.h
@@ -374,7 +374,7 @@ void upb_inttable_iter_setdone(upb_inttable_iter* i);
 bool upb_inttable_iter_isequal(const upb_inttable_iter* i1,
                                const upb_inttable_iter* i2);
 
-uint32_t _upb_Hash(const char* p, size_t n, uint64_t seed);
+uint32_t _upb_Hash(const void* p, size_t n, uint64_t seed);
 
 #ifdef __cplusplus
 } /* extern "C" */