diff --git a/src/apps/http/makefsdata/makefsdata.c b/src/apps/http/makefsdata/makefsdata.c
index 01582c19..f4dbde4e 100644
--- a/src/apps/http/makefsdata/makefsdata.c
+++ b/src/apps/http/makefsdata/makefsdata.c
@@ -455,9 +455,9 @@ int process_sub(FILE *data_file, FILE *struct_file)
 
         if (ret == 0) {
 #if (defined _MSC_VER || defined __MINGW32__) && (defined _UNICODE)
-          size_t   i;
+          size_t num_char_converted;
           char currName[256];
-          wcstombs_s(&i, currName, sizeof(currName), file.name, sizeof(currName));
+          wcstombs_s(&num_char_converted, currName, sizeof(currName), file.name, sizeof(currName));
 #else
           const char *currName = file.name;
 #endif
@@ -495,9 +495,9 @@ int process_sub(FILE *data_file, FILE *struct_file)
         if (ret == 0) {
           if (!file.is_dir) {
 #if (defined _MSC_VER || defined __MINGW32__) && (defined _UNICODE)
-            size_t   i;
+            size_t num_char_converted;
             char curName[256];
-            wcstombs_s(&i, curName, sizeof(curName), file.name, sizeof(curName));
+            wcstombs_s(&num_char_converted, curName, sizeof(curName), file.name, sizeof(curName));
 #else
             const char *curName = file.name;
 #endif