diff --git a/dlls/dbghelp/dbghelp_private.h b/dlls/dbghelp/dbghelp_private.h
index 6d6f6c76142..73b9cf9c8c1 100644
--- a/dlls/dbghelp/dbghelp_private.h
+++ b/dlls/dbghelp/dbghelp_private.h
@@ -694,7 +694,7 @@ typedef void (*stabs_def_cb)(struct module* module, ULONG_PTR load_offset,
                                 BOOL is_public, BOOL is_global, unsigned char other,
                                 struct symt_compiland* compiland, void* user);
 extern BOOL         stabs_parse(struct module* module, ULONG_PTR load_offset,
-                                const char* stabs, int stablen,
+                                const char* stabs, size_t nstab, size_t stabsize,
                                 const char* strs, int strtablen,
                                 stabs_def_cb callback, void* user) DECLSPEC_HIDDEN;
 
diff --git a/dlls/dbghelp/elf_module.c b/dlls/dbghelp/elf_module.c
index 01759cd18ee..50f19bc79a3 100644
--- a/dlls/dbghelp/elf_module.c
+++ b/dlls/dbghelp/elf_module.c
@@ -1007,7 +1007,7 @@ static BOOL elf_load_debug_info_from_map(struct module* module,
             {
                 /* OK, now just parse all of the stabs. */
                 lret = stabs_parse(module, module->format_info[DFI_ELF]->u.elf_info->elf_addr,
-                                   stab, image_get_map_size(&stab_sect),
+                                   stab, image_get_map_size(&stab_sect) / sizeof(struct stab_nlist), sizeof(struct stab_nlist),
                                    stabstr, image_get_map_size(&stabstr_sect),
                                    NULL, NULL);
                 if (lret)
diff --git a/dlls/dbghelp/macho_module.c b/dlls/dbghelp/macho_module.c
index ab88d271081..1e01d84c192 100644
--- a/dlls/dbghelp/macho_module.c
+++ b/dlls/dbghelp/macho_module.c
@@ -944,7 +944,7 @@ static int macho_parse_symtab(struct image_file_map* ifm,
 
     if (!stabs_parse(mdi->module,
                      mdi->module->format_info[DFI_MACHO]->u.macho_info->load_addr - fmap->segs_start,
-                     stab, sc->nsyms * stabsize,
+                     stab, sc->nsyms, stabsize,
                      stabstr, sc->strsize, macho_stabs_def_cb, mdi))
         ret = -1;
 
diff --git a/dlls/dbghelp/pe_module.c b/dlls/dbghelp/pe_module.c
index 9d4e82cc714..0560f3ef05a 100644
--- a/dlls/dbghelp/pe_module.c
+++ b/dlls/dbghelp/pe_module.c
@@ -500,7 +500,7 @@ static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
         {
             ret = stabs_parse(module,
                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
-                              stab, image_get_map_size(&sect_stabs),
+                              stab, image_get_map_size(&sect_stabs) / sizeof(struct stab_nlist), sizeof(struct stab_nlist),
                               stabstr, image_get_map_size(&sect_stabstr),
                               NULL, NULL);
         }
diff --git a/dlls/dbghelp/stabs.c b/dlls/dbghelp/stabs.c
index b2da8f866b5..9ac3089d02e 100644
--- a/dlls/dbghelp/stabs.c
+++ b/dlls/dbghelp/stabs.c
@@ -1247,7 +1247,7 @@ static inline void stabbuf_append(char **buf, unsigned *buf_size, const char *st
 }
 
 BOOL stabs_parse(struct module* module, ULONG_PTR load_offset,
-                 const char* pv_stab_ptr, int stablen,
+                 const char* pv_stab_ptr, size_t nstab, size_t stabsize,
                  const char* strs, int strtablen,
                  stabs_def_cb callback, void* user)
 {
@@ -1256,7 +1256,6 @@ BOOL stabs_parse(struct module* module, ULONG_PTR load_offset,
     struct symt_compiland*      compiland = NULL;
     char*                       srcpath = NULL;
     int                         i;
-    int                         nstab;
     const char*                 ptr;
     char*                       stabbuff;
     unsigned int                stabbufflen;
@@ -1272,14 +1271,8 @@ BOOL stabs_parse(struct module* module, ULONG_PTR load_offset,
     BOOL                        ret = TRUE;
     struct location             loc;
     unsigned char               type;
-    size_t                      stabsize = sizeof(struct stab_nlist);
     uint64_t                    n_value;
 
-#ifdef __APPLE__
-    if (module->process->is_64bit)
-        stabsize = sizeof(struct macho64_nlist);
-#endif
-    nstab = stablen / stabsize;
     strs_end = strs + strtablen;
 
     memset(stabs_basic, 0, sizeof(stabs_basic));
@@ -1298,11 +1291,7 @@ BOOL stabs_parse(struct module* module, ULONG_PTR load_offset,
     for (i = 0; i < nstab; i++)
     {
         stab_ptr = (struct stab_nlist *)(pv_stab_ptr + i * stabsize);
-        n_value = stab_ptr->n_value;
-#ifdef __APPLE__
-        if (module->process->is_64bit)
-            n_value = ((struct macho64_nlist *)stab_ptr)->n_value;
-#endif
+        n_value = stabsize == sizeof(struct macho64_nlist) ? ((struct macho64_nlist *)stab_ptr)->n_value : stab_ptr->n_value;
         ptr = strs + stab_ptr->n_strx;
         if ((ptr > strs_end) || (ptr + strlen(ptr) > strs_end))
         {