diff --git a/src/resources.c b/src/resources.c
index a04786c..d49e32f 100644
--- a/src/resources.c
+++ b/src/resources.c
@@ -203,22 +203,22 @@ HRESULT Rsrc_free_resource(HRSRC resource)
   return S_OK;
 }
 
-UINT Rsrc_sizeof_resource(HRSRC resource)
+UINT32 Rsrc_sizeof_resource(HRSRC resource)
 {
   PRESOURCEINFO p = (PRESOURCEINFO)resource;
   if (!p)
     return 0;
   if (p->entryinfo.valid & ZIP_STAT_SIZE)
-    return (UINT)(p->entryinfo.size);
+    return (UINT32)(p->entryinfo.size);
   return 0;
 }
 
-HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT size, PUINT actual_read)
+HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT32 size, PUINT32 actual_read)
 {
   HRESULT hr = S_OK;
   PRESOURCEINFO p = (PRESOURCEINFO)resource;
-  UINT max_size = size;
-  UINT already_read = 0;
+  UINT32 max_size = size;
+  UINT32 already_read = 0;
   PBYTE pbuffer = (PBYTE)buffer;
   zip_int64_t nread;
   zip_file_t *fp;
@@ -229,9 +229,9 @@ HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT size, PUINT a
     return E_POINTER;
   if (p->entryinfo.valid & ZIP_STAT_SIZE)
   {
-    if ((UINT)(p->entryinfo.size) < max_size)
-      max_size = (UINT)(p->entryinfo.size);
-    else if ((UINT)(p->entryinfo.size) > max_size)
+    if ((UINT32)(p->entryinfo.size) < max_size)
+      max_size = (UINT32)(p->entryinfo.size);
+    else if ((UINT32)(p->entryinfo.size) > max_size)
       hr = UPIWIN_S_PARTIALRSRC;
   }
 
@@ -247,8 +247,8 @@ HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT size, PUINT a
         break;
       }
       pbuffer += (UINT_PTR)nread;
-      max_size -= (UINT)nread;
-      already_read += (UINT)nread;
+      max_size -= (UINT32)nread;
+      already_read += (UINT32)nread;
     }
     zip_fclose(fp);
   }
@@ -273,7 +273,7 @@ HRESULT Rsrc_setup(void)
   zip_source_t *syssource;
   zip_error_t errinfo;
 
-  Log(LDEBUG, "system resource length = %u", (UINT)(&_binary_sysresources_zip_size));
+  Log(LDEBUG, "system resource length = %u", (UINT_PTR)(&_binary_sysresources_zip_size));
   zip_error_init(&errinfo);
   syssource = zip_source_buffer_create(_binary_sysresources_zip_start, (UINT_PTR)(&_binary_sysresources_zip_size),
                                        0, &errinfo);
diff --git a/src/resources.h b/src/resources.h
index 082a3a2..6f3be8f 100644
--- a/src/resources.h
+++ b/src/resources.h
@@ -32,8 +32,8 @@ extern HRESULT Rsrc_load_file(PCSTR filename, PHRESFILE newhandle);
 extern HRESULT Rsrc_close_file(HRESFILE handle);
 extern HRESULT Rsrc_find_resource(HRESFILE hfile, PCSTR name, PCSTR type, PHRSRC presource);
 extern HRESULT Rsrc_free_resource(HRSRC resource);
-extern UINT Rsrc_sizeof_resource(HRSRC resource);
-extern HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT size, PUINT actual_read);
+extern UINT32 Rsrc_sizeof_resource(HRSRC resource);
+extern HRESULT Rsrc_read_resource_here(HRSRC resource, PVOID buffer, UINT32 size, PUINT32 actual_read);
 
 extern HRESULT Rsrc_setup(void);